Me. Justice Stewart
delivered the opinion of the Court.
In an action in which federal jurisdiction is based on diversity of citizenship, may the plaintiff assert a claim against a third-party defendant when there is no independent basis for federal jurisdiction over that claim? The Court of Appeals for the Eighth Circuit held in this case that such a claim is within the ancillary jurisdiction of the federal courts. We granted certiorari, 434 U. S. 1008, because this decision conflicts with several recent decisions of other Courts of Appeals.
I
On January 18, 1972, James Kroger was electrocuted when the boom of a steel crane next to which he was walking came too close to a high-tension electric power line. The respondent (his widow, who is the administratrix of his estate) filed a wrongful-death action in the United States District Court for the District of Nebraska against the Omaha Public Power District (OPPD). Her complaint alleged that OPPD’s negligent construction, maintenance, and operation of the power line had caused Kroger’s death. Federal jurisdiction was based on diversity of citizenship, since the respondent was a citizen of Iowa and OPPD was a Nebraska corporation.
OPPD then filed a third-party complaint pursuant to Fed. Bule Civ. Proc. 14 (a) against the petitioner, Owen Equipment and Erection Co. (Owen), alleging that the crane was owned and operated by Owen, and that Owen’s negligence had been the proximate cause of Kroger’s death. OPPD later moved for summary judgment on the respondent’s complaint against it. While this motion was pending, the respondent was granted leave to file an amended complaint naming Owen as an additional defendant. Thereafter, the District Court granted OPPD’s motion for summary judgment in an unreported opinion. The case thus went to trial between the respondent and the petitioner alone.
The respondent’s amended complaint alleged that Owen was “a Nebraska corporation with its principal place of business in Nebraska.” Owen’s answer admitted that it was “a corporation organized and existing under the laws of the State of Nebraska/’ and denied every other allegation of the complaint. On the third day of trial, however, it was disclosed that the petitioner’s principal place of business was in Iowa, not Nebraska, and that the petitioner and the respondent were thus both citizens of Iowa. The petitioner then moved to dismiss the complaint for lack of jurisdiction. The District Court reserved decision on the motion, and the jury thereafter returned a verdict in favor of the respondent. In an unreported opinion issued after the trial, the District Court denied the petitioner’s motion to dismiss the complaint.
The judgment was affirmed on appeal. 558 F. 2d 417. The Court of Appeals held that under this Court’s decision in Mine Workers v. Gibbs, 383 U. S. 715, the District Court had jurisdictional power, in its discretion, to adjudicate the respondent’s claim against the petitioner because that claim arose from the “core of 'operative facts’ giving rise to both [respondent’s] claim against OPPD and OPPD’s claim against Owen.” 558 F. 2d, at 424. It further held that the District Court had properly exercised its discretion in proceeding to decide the case even after summary judgment had been granted to OPPD, because the petitioner had concealed its Iowa citizenship from the respondent. Rehearing en banc was denied by an equally divided court. 558 F. 2d 417.
II
It is undisputed that there was no independent basis of federal jurisdiction over the respondent’s state-law tort action against the petitioner, since both are citizens of Iowa. And although Fed. Rule Civ. Proc. 14 (a) permits a plaintiff to assert a claim against a third-party defendant, see n. 2, supra, it does not purport to say whether or not such a claim requires an independent basis of federal jurisdiction. Indeed, it could not determine that question, since it is axiomatic that the Federal Rules of Civil Procedure do not create or withdraw federal jurisdiction.
In affirming the District Court’s judgment, the Court of Appeals relied upon the doctrine of ancillary jurisdiction, whose contours it believed were defined by this Court’s holding in Mine Workers v. Gibbs, supra. The Oibbs case differed from this one in that it involved pendent jurisdiction, which concerns the resolution of a plaintiff’s federal- and state-law claims against a single defendant in one action. By contrast, in this case there was no claim based upon substantive federal law, but rather state-law tort claims against two different defendants. Nonetheless, the Court of Appeals was correct in perceiving that Gibbs and this case are two species of the same generic problem: Under what circumstances may a federal court hear and decide a state-law claim arising between citizens of the same State? But we believe that the Court of Appeals failed to understand the scope of the doctrine of the Gibbs case.
The plaintiff in Gibbs alleged that the defendant union had violated the common law of Tennessee as well as the federal prohibition of secondary boycotts. This Court held that, although the parties were not of diverse citizenship, the District Court properly entertained the state-law claim as pendent to the federal claim. The crucial holding was stated as follows:
“Pendent jurisdiction, in the sense of judicial power, exists whenever there is a claim ‘arising under [the] Constitution, the Laws of the United States, and Treaties made, or which shall be made, under their Authority .. . ,’ U. S. Const., Art. Ill, § 2, and the relationship between that claim and the state claim permits the conclusion that the entire action before the court comprises but one constitutional ‘case.’ . . . The state and federal claims must derive from a common nucleus of operative fact. But if, considered without regard to their federal or state character, a plaintiff’s claims are such that he would ordinarily be expected to try them all in one judicial proceeding, then, assuming substantiality of the federal issues, there is power in federal courts to hear the whole.” 383 U. S., at 725 (emphasis in original).
It is apparent that Gibbs delineated the constitutional limits of federal judicial power. But even if it be assumed that the District Court in the present case had constitutional power to decide the respondent’s lawsuit against the petitioner, it does not follow that the decision of the Court of Appeals was correct. Constitutional power is merely the first hurdle that must be overcome in determining that a federal court has jurisdiction over a particular controversy. For the jurisdiction of the federal courts is limited not only by the provisions of Art. Ill of the Constitution, but also by Acts of Congress. Palmore v. United States, 411 U. S. 389, 401; Lockerty v. Phillips, 319 U. S. 182, 187; Kline v. Burke Constr. Co., 260 U. S. 226, 234; Cary v. Curtis, 3 How. 236, 245.
That statutory law as well as the Constitution may limit a federal court’s jurisdiction over nonfederal claims is well illustrated by two recent decisions of this Court, Aldinger v. Howard, 427 U. S. 1, and Zahn v. International Paper Co., 414 U. S. 291. In Aldinger the Court held that a Federal District Court lacked jurisdiction over a state-law claim against a county, even if that claim was alleged to be pendent to one against county officials under 42 U. S. C. § 1983. In Zahn the Court held that in a diversity class action under Fed. Rule Civ. Proc. 23 (b)(3), the claim of each member of the plaintiff class must independently satisfy the minimum jurisdictional amount set by 28 U. S. C. § 1332 (a), and rejected the argument that jurisdiction existed over those claims that involved $10,000 or less as ancillary to those that involved more. In each case, despite the fact that federal and non-federal claims arose from a “common nucleus of operative fact,” the Court held that the statute conferring jurisdiction over the federal claim did not allow the exercise of jurisdiction over the nonfederal claims.
The Aldinger and Zahn cases thus make clear that a finding that federal and nonfederal claims arise from a “common nucleus of operative fact,” the test of Gibbs, does not end the inquiry into whether a federal court has power to hear the nonfederal claims along with the federal ones. Beyond this constitutional minimum, there must be an examination of the posture in which the nonfederal claim is asserted and of the specific statute that confers jurisdiction over the federal claim, in order to determine whether “Congress in [that statute] has . . . expressly or by implication negated” the exercise of jurisdiction over the particular nonfederal claim. Aldinger v. Howard, supra, at 18.
Ill
The relevant statute in this case, 28 U. S. C. § 1332 (a) (1), confers upon federal courts jurisdiction over “civil actions where the matter in controversy exceeds the sum or value of $10,000 . . . and is between . . . citizens of different States.” This statute and its predecessors have consistently been held to require complete diversity of citizenship. That is, diversity jurisdiction does not exist unless each defendant is a citizen of a different State from each plaintiff. Over the years Congress has repeatedly re-enacted or amended the statute conferring diversity jurisdiction, leaving intact this rule of complete diversity. Whatever may have been the original purposes of diversity-of-citizenship jurisdiction, this subsequent history clearly demonstrates a congressional mandate that diversity jurisdiction is not to be available when any plaintiff is a citizen of the same State as any defendant. Cf. Snyder v. Harris, 394 U. S. 332, 338-339.
Thus it is clear that the respondent could not originally have brought suit in federal court naming Owen and OPPD as codefendants, since citizens of Iowa would have been on both sides of the litigation. Yet the identical lawsuit resulted when she amended her complaint. Complete diversity was destroyed just as surely as if she had sued Owen initially. In either situation, in the plain language of the statute, the “matter in controversy” could not be “between . . . citizens of different States.”
It is a fundamental precept that federal courts are courts of limited jurisdiction. The limits upon federal jurisdiction, whether imposed by the Constitution or by Congress, must be neither disregarded nor evaded. Yet under the reasoning of the Court of Appeals in this case, a plaintiff could defeat the statutory requirement of complete diversity by the simple expedient of suing only those defendants who were of diverse citizenship and waiting for them to implead nondiverse defendants. If, as the Court of Appeals thought, a “common nucleus of operative fact” were the only requirement for ancillary jurisdiction in a diversity case, there would be no principled reason why the respondent in this case could not have joined her cause of action against Owen in her original complaint as ancillary to her claim against OPPD. Congress’ requirement of complete diversity would thus have been evaded completely.
It is true, as the Court of Appeals noted, that the exercise of ancillary jurisdiction over nonfederal claims has often been upheld in situations involving impleader, cross-claims or counterclaims. But in determining whether jurisdiction over a nonfederal claim exists, the context in which the non-federal claim is asserted is crucial. See Aldinger v. Howard, 427 U. S., at 14. And the claim here arises in a setting quite different from the kinds of nonfederal claims that have been viewed in other cases as falling within the ancillary jurisdiction of the federal courts.
First, the nonfederal claim in this case was simply not ancillary to the federal one in the same sense that, for example, the impleader by a defendant of a third-party defendant always is. A third-party complaint depends at least in part upon the resolution of the primary lawsuit. See n. 3, supra. Its relation to the original complaint is thus not mere factual similarity but logical dependence. Cf. Moore v. New York Cotton Exchange, 270 U. S. 593, 610. The respondent's claim against the petitioner, however, was entirely separate from her original claim against OPPD, since the petitioner’s liability to her depended not at all upon whether or not OPPD was also liable. Far from being an ancillary and dependent claim, it was a new and independent one.
Second, the nonfederal claim here was asserted by the plaintiff, who voluntarily chose to bring suit upon a state-law claim in a federal court. By contrast, ancillary jurisdiction typically involves claims by a defending party haled into court against his will, or by another person whose rights might be irretrievably lost unless he could assert them in an ongoing action in a federal court. A plaintiff cannot complain if ancillary jurisdiction does not encompass all of his possible claims in a case such as this one, since it is he who has chosen the federal rather than the state forum and must thus accept its limitations. “[T]he efficiency plaintiff seeks so avidly is available without question in the state courts.” Kenrose Mfg. Co. v. Fred Whitaker Co., 512 F. 2d 890, 894 (CA4).
It is not unreasonable to assume that, in generally requiring complete diversity, Congress did not intend to confine the jurisdiction of federal courts so inflexibly that they are unable to protect legal rights or effectively to resolve an entire, logically entwined lawsuit. Those practical needs are the basis of the doctrine of ancillary jurisdiction. But neither the convenience of litigants nor considerations of judicial economy can suffice to justify extension of the doctrine of ancillary jurisdiction to a plaintiff’s cause of action against a citizen of the same State in a diversity case. Congress has established the basic rule that diversity jurisdiction exists under 28 U. S. C. § 1332 only when there is complete diversity of citizenship. “The policy of the statute calls for its strict construction.” Healy v. Ratta, 292 U. S. 263, 270; Indianapolis v. Chase Nat. Bank, 314 U. S. 63, 76; Thomson v. Gaskill, 315 U. S. 442, 446; Snyder v. Harris, 394 U. S., at 340. To allow the requirement of complete diversity to be circumvented as it was in this case would simply flout the congressional command.
Accordingly, the judgment of the Court of Appeals is reversed.
It is so ordered.
Fawvor v. Texaco, Inc., 546 F. 2d 636 (CA5); Saalfrank v. O’Daniel, 533 F. 2d 325 (CA6); Parker v. W. W. Moore & Sons, 528 F. 2d 764 (CA4); Joseph v. Chrysler Corp., 513 F. 2d 626 (CA3), aff’g 61 F. R. D. 347 (WD Pa.); Kenrose Mfg. Co. v. Fred Whitaker Co., 512 F. 2d 890 (CA4).
Rule 14 (a) provides in relevant part:
“At any time after commencement of the action a defending party, as a third-party plaintiff, may cause a summons and complaint to be served upon a person not a party to the action who is or may be liable to him for all or part of the plaintiff’s claim against him. . . . The person served with the summons and third-party complaint, hereinafter called the third-party defendant, shall make his defenses to the third-party plaintiff’s claim as provided in Rule 12 and his counterclaims against the third-party plaintiff and cross-claims against other third-party defendants as provided in Rule 13. The third-party defendant may assert against the plaintiff any defenses which the third-party plaintiff has to the plaintiff’s claim. The third-party defendant may also assert any claim against the plaintiff arising out of the transaction or occurrence that is the subject matter of the plaintiff’s claim against the third-party plaintiff. The plaintiff may assert any claim against the third-party defendant arising out of the transaction or occurrence that is the subject matter of the plaintiff’s claim against the third-party plaintiff, and the third-party defendant thereupon shall assert his defenses as provided in Rule 12 and his counter-claims and cross-claims as provided in Rule 13.”
Under Rule 14 (a), a third-party defendant may not be impleaded merely because he may be liable to the plaintiff. See n. 2, supra; see also Advisory Committee’s Notes on 1946 Amendment to Fed. Rule Civ. Proc. 14, 28 U. S. C. App., pp. 7752-7753. While the third-party complaint in this case alleged merely that Owen’s negligence caused Kroger’s death, and the basis of Owen’s alleged liability to OPPD is nowhere spelled out, OPPD evidently relied upon the state common-law right of contribution among joint tortfeasors. See Dairyland, Ins. Co. v. Mumert, 212 N. W. 2d 436, 438 (Iowa); Best v. Yerkes, 247 Iowa 800, 77 N. W. 2d 23. The petitioner has never challenged the propriety of the third-party complaint as such.
Judgment was entered pursuant to Fed. Rule Civ. Proc. 54 (b), and the Court of Appeals affirmed. Kroger v. Omaha Public Power Dist., 523 F. 2d 161 (CA8).
The problem apparently was one of geography. Although the Missouri River generally marks the boundary between Iowa and Nebraska, Carter Lake, Iowa, where the accident occurred and where Owen had its main office, lies west of the river, adjacent to Omaha, Neb. Apparently the river once avulsed at one of its bends, cutting Carter Lake off from the rest of Iowa.
Title 28 U. S. C. § 1332 (c) provides that “[f]or the purposes of ['diversity jurisdiction] . . . , a corporation shall be deemed a citizen of any State by which it has been incorporated and of the State where it has its principal place of business.”
Fed. Rule Civ. Proc. 82; see Snyder v. Harris, 394 U. S. 332; Sibbach v. Wilson & Co., 312 U. S. 1, 10.
No more than in Aldinger v. Howard, 427 U. S. 1, is it necessary to determine here “whether there are any 'principled' differences between pendent and ancillary jurisdiction; or, if there are, what effect Gibbs had on such differences.” Id., at 13.
The Court further noted that even when such power exists, its exercise remains a matter of discretion based upon “considerations of judicial economy, convenience and fairness to litigants,” 383 U. S., at 726, and held that the District Court had not abused its discretion in retaining jurisdiction of the state-law claim.
Federal jurisdiction in Gibbs was based upon the existence of a question of federal law. The Court of Appeals in the present case believed that the “common nucleus of operative fact” test also determines the outer boundaries of constitutionally permissible federal jurisdiction when that jurisdiction is based upon diversity of citizenship. We may assume without deciding that the Court of Appeals was correct in this regard. See also n. 13, infra.
As used, in this opinion, the term “nonfederal claim” means one as to which there is no independent basis for federal jurisdiction. Conversely, a “federal claim” means one as to which an independent basis for federal jurisdiction exists.
In Monell v. New York City Dept. of Social Services, 436 U. S. 658, we have overruled Monroe v. Pape, 365 U. S. 167, insofar as it held that political subdivisions are never amenable to suit under 42 U. S. C. § 1983 — the basis of the holding in Aldinger that 28 U. S. C. § 1343 (3) does not allow pendent jurisdiction of a state-law claim against a county. But Monell in no way qualifies the holding of Aldinger that the jurisdictional questions presented in a ease such as this one are statutory as well as constitutional, a point on which the dissenters in Aldinger agreed with the Court. See 427 U. S., at 22 n. 3 (Brennan, J., joined by Marshall and Blackmun, JJ., dissenting).
E. g., Strawbridge v. Curtiss, 3 Cranch 267; Coal Co. v. Blatchford, 11 Wall. 172; Indianapolis v. Chase Nat. Bank, 314 U. S. 63, 69; American Fire & Cas. Co. v. Finn, 341 U. S. 6, 17. It is settled that complete diversity is not a constitutional requirement. State Farm Fire & Cos. Co. v. Tashire, 386 U. S. 523, 530-531.
The various Acts are enumerated and described in 1 J. Moore, Federal Practice ¶0.71 [4] (2d ed. 1977).
See C. Wright, Law of Federal Courts §23 (3d ed. 1976), for a discussion of the various theories that have been advanced to explain the constitutional grant of diversity-of-eitizenship jurisdiction.
Notably, Congress enacted § 1332 as part of the Judicial Code of 1948, 62 Stat. 930, shortly after Rule 14 was amended in 1946. When the Rule was amended, the Advisory Committee noted that “in any case where the plaintiff could not have joined the third party originally because of jurisdictional limitations such as lack of diversity of citizenship,, the majority view is that any attempt by the plaintiff to amend his complaint and assert a claim against the impleaded third party would be unavailing.” 28 U. S. C. App., p. 7752. The subsequent re-enactment without relevant change of the diversity statute may thus be seen as evidence of congressional approval of that “majority view.”
This is not an unlikely hypothesis, since a defendant in a tort suit such as this one would surely try to limit his liability by impleading any joint tortfeasors for indemnity or contribution. Some commentators have suggested that the possible abuse of third-party practice could be dealt with under 28 U. S. C. § 1359, which forbids collusive attempts to create federal jurisdiction. See, e. g., 3 J. Moore, Federal Practice ¶ 14.27 [1], p. 14^571 (2d ed. 1974); 6 C. Wright & A. Miller, Federal Practice and Procedure § 1444, pp. 231-232 (1971); Note, Rule 14 Claims and Ancillary Jurisdiction, 57 Va. L. Rev. 265, 274-275 (1971). The dissenting opinion today also expresses this view. Post, at 383. But there is nothing necessarily collusive about a plaintiff’s selectively suing only those tortfeasors of diverse citizenship, or about the named defendants’ desire to implead joint tortfeasors. Nonetheless, the requirement of complete diversity would be eviscerated by such a course of events.
The ancillary jurisdiction of the federal courts derives originally from cases such as Freeman v. Howe, 24 How. 450, which held that when federal jurisdiction “effectively controls the property or fund under dispute, other claimants thereto should be allowed to intervene in order to protect their interests, without regard to jurisdiction.” Aldinger v. Howard, 427 U. S., at 11. More recently, it has been said to include cases that involve multiparty practice, such as compulsory counterclaims, e. g., Moore v. New York Cotton Exchange, 270 U. S. 593; impleader, e. g., H. L. Peterson Co. v. Applewhite, 383 F. 2d 430, 433 (CA5); Dery v. Wyer, 265 F. 2d 804 (CA2); cross-claims, e. g., LASA Per L’Industria Del Marmo Soc. Per Azioni v. Alexander, 414 F. 2d 143 (CA6); Scott v. Fancher, 369 F. 2d 842, 844 (CA5); Glen Falls Indemnity Co. v. United States ex rel. Westinghouse Electric Supply Co., 229 F. 2d 370, 373-374 (CA9); or intervention as of right, e. g., Phelps v. Oaks, 117 U. S. 236, 241; Smith Petroleum Service, Inc. v. Monsanto Chemical Co., 420 F. 2d 1103, 1113-1115 (CA5).
See n. 18, supra.
Whether Iowa's statute of limitations would now bar an action by the respondent in an Iowa court is, of course, entirely a matter of state law. See Iowa Code §614.10 (1977). Compare 558 F. 2d, at 420, with id., at 432 n. 42 (Bright, J., dissenting); cf. Burnett v. New York Central R. Co., 380 U. S. 424, 431-432, and n. 9.
Our holding is that the District Court lacked power to entertain the respondent’s lawsuit against the petitioner. Thus, the asserted inequity in the respondent’s alleged concealment of its citizenship is irrelevant. Federal judicial power does not depend upon “prior action or consent of the parties.” American Fire & Cas. Co. v. Finn, 341 U. S., at 17-18.
What follows is an opinion from the Supreme Court of the United States. Your task is to determine whether the decision of the court whose decision the Supreme Court reviewed was itself liberal or conservative. In the context of issues pertaining to criminal procedure, civil rights, First Amendment, due process, privacy, and attorneys, consider liberal to be pro-person accused or convicted of crime, or denied a jury trial, pro-civil liberties or civil rights claimant, especially those exercising less protected civil rights (e.g., homosexuality), pro-child or juvenile, pro-indigent pro-Indian, pro-affirmative action, pro-neutrality in establishment clause cases, pro-female in abortion, pro-underdog, anti-slavery, incorporation of foreign territories anti-government in the context of due process, except for takings clause cases where a pro-government, anti-owner vote is considered liberal except in criminal forfeiture cases or those where the taking is pro-business violation of due process by exercising jurisdiction over nonresident, pro-attorney or governmental official in non-liability cases, pro-accountability and/or anti-corruption in campaign spending pro-privacy vis-a-vis the 1st Amendment where the privacy invaded is that of mental incompetents, pro-disclosure in Freedom of Information Act issues except for employment and student records. In the context of issues pertaining to unions and economic activity, consider liberal to be pro-union except in union antitrust where liberal = pro-competition, pro-government, anti-business anti-employer, pro-competition, pro-injured person, pro-indigent, pro-small business vis-a-vis large business pro-state/anti-business in state tax cases, pro-debtor, pro-bankrupt, pro-Indian, pro-environmental protection, pro-economic underdog pro-consumer, pro-accountability in governmental corruption, pro-original grantee, purchaser, or occupant in state and territorial land claims anti-union member or employee vis-a-vis union, anti-union in union antitrust, anti-union in union or closed shop, pro-trial in arbitration. In the context of issues pertaining to judicial power, consider liberal to be pro-exercise of judicial power, pro-judicial "activism", pro-judicial review of administrative action. In the context of issues pertaining to federalism, consider liberal to be pro-federal power, pro-executive power in executive/congressional disputes, anti-state. In the context of issues pertaining to federal taxation, consider liberal to be pro-United States and conservative pro-taxpayer. In miscellaneous, consider conservative the incorporation of foreign territories and executive authority vis-a-vis congress or the states or judcial authority vis-a-vis state or federal legislative authority, and consider liberal legislative veto. The lower court's decision direction is unspecifiable if the manner in which the Supreme Court took jurisdiction is original or certification; or if the direction of the Supreme Court's decision is unspecifiable and the main issue pertains to private law or interstate relations