Rule
Rule or ruling may refer to:

Education
Royal University of Law and Economics (RULE), a university in Cambodia

Human activity
The exercise of political or personal control by someone with authority or power
Business rule, a rule pertaining to the structure or behavior internal to a business
School rule, a rule that is part of school discipline
Sport rule, a rule that defines how a sport is played
Game rule, a rule that defines how a game is played
Moral, a rule or element of a moral code for guiding choices in human behavior
Norm (philosophy), a kind of sentence or a reason to act, feel or believe
Rule of thumb, a principle with broad application that is not intended to be strictly accurate or reliable for every situation
Unspoken rule, an assumed rule of human behavior that is not voiced or written down
Slide rule, a mechanical analog computer

Science
Rule of inference or transformation rule, a term in logic for a function which takes premises and returns a conclusion
Phrase structure rule or rewrite rule, used in some theories of linguistics
"Rule X" elementary cellular automaton, where X is a number between 0-255 characterizing a specific model (e.g. Rule 110)
Ruler, or "rule"; a distance measuring device
Phonological rule
Social norm, explicit or implicit rules used within society or by a group

Law and government
Advance tax ruling, a tool for conforming taxation arrangements
Court order, a decision by a court
Government
In rulemaking by the federal government of the United States, a regulation mandated by Congress, but written or expanded upon by the executive branch
Law, which may informally be called a "rule"
Military rule, governance by a military body
Monastic rule, a collection of precepts that guides the life of monks or nuns in a religious order
Procedural law, a ruleset governing the application of laws to cases
Rule of law, government based not on arbitrary decisions of officials but on laws

Geography
Rule, Arkansas
Rule, Texas

Literature
The Rules, bestselling self-help book
Rules (novel), 2007 Newbery Honor book by Cynthia Lord
"The Rulers", a science fiction short story by A. E. van Vogt

Music
Ja Rule (born 1976), hip hop artist

Albums
R.U.L.E., by Ja Rule, 2004
Rule, by Anna Tsuchiya, 2010
Rules (album), by the Whitest Boy Alive, 2009
Rules, by First Blood, 2017
Rules!, by Manila Luzon, 2019

Songs
"Rule" (Nas song), 2001
"Rule"/"Sparkle", a double A-side by Ayumi Hamasaki, 2009
"Rule", by X Ambassadors from Orion, 2019
"Rules" (Doja Cat song), 2019
"Rules" (KMFDM song), 1996
"Rules", by Shakira from Laundry Service, 2001
"The Rules", by XO-IQ, featured in the television series Make It Pop

Other uses
Rule (surname)
The Rule (film), a 2014 American documentary
Ruler (film), a 2019 Telugu-language film
Rules: Pyaar Ka Superhit Formula, a 2003 Bollywood film
rule: a snippet of code which can perform email filtering
Rule (horse) (born 2007), American racehorse
Rules (restaurant), upscale English restaurant in London
Rules!, a 2014 iOS video game
"Rule #1" (Batwoman)
Rule (Bosnia and Herzegovina), political party

See also
All pages with titles beginning with Rule
All pages with titles beginning with Rule of
All pages with titles beginning with Rules of
All pages with titles beginning with Rules for
Debate (parliamentary procedure) for rules governing discussion on the merits of a pending question.