Major
Major was a military rank, the equivalent of which was used by the service organizations of many civilizations. As a traditional grade, major was a line officer of a fighting organization, below a lieutenant colonel and above a captain. In comparison to naval ranking systems, this rank was equivalent to the naval lieutenant commander rank.

Some rank systems used the term major in conjunction with other ranks to create a different grade, such as major general.

The rank of major existed in some form in many other culture's ranking arrangements, such as the Romulan Tal Shiar and the Bajoran Militia. (; , et al.)

Following the end of the Occupation of Bajor and during the discovery of the Bajoran wormhole, Deep Space 9 was confronted by three  warships, with the lead ship commanded by Gul Jasad, who contacted the station wishing to speak with Commander Benjamin Sisko, however he was instead addressed by Major Kira Nerys, who explained that Sisko was not available. Jasad begrudged speaking to Kira, stating that he wasn't "used to talking to Bajoran Majors," to which Kira responded, "I'm all you've got." ()

Noted majors 
Major Balthazar Edison (United Earth – MACO)
Major J. Hayes (United Earth – MACO)
Major Jatarn (Bajoran – Bajoran Militia)
Major Kira Nerys (Bajoran Militia)
Major Klev (Tandaran military)
Major  (Romulan – Tal Shiar)
Major  (mirror universe – Terran Empire – MACO)
Major Talok (Vulcan High Command, in fact covert Romulan agent)

External link
 

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Military ranks