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.
Following the end of the Occupation of Bajor and during the discovery of the Bajoran wormhole, Deep Space 9 was confronted by three Galor-class 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." (DS9: "Emissary")
- 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 Rakal (Romulan – Tal Shiar)
- Major Malcolm Reed (mirror universe – Terran Empire – MACO)
- Major Talok (Vulcan High Command, in fact covert Romulan agent)
|Enlisted personnel||Commissioned officers||Flag officers|
|ENS||LT JG||LT||LT CMDR||CMDR||CAPT||FCAPT||CDORE||RADM||VADM||ADM||FADM|
|2nd LT||1st LT||CAPT||MAJ||LT COL||COL||BRIG||MAJ GEN||LT GEN||GEN||MARSHAL|
|Services:||Andorian • Bajoran • Cardassian • Ferengi • Human (CSA • Third Reich • UE MACO • USA) • Jem'Hadar • Klingon • Romulan • United Earth/Federation Starfleet • Vulcan|
Mirror universe: Terran Empire Starfleet • Terran Empire MACO