In Starfleet, an enlisted crewperson is one who has not completed the four-year Starfleet Academy course. In most cases, enlisted crewmen sign up directly to a ship or posting, and receive basic training, as well as any specific courses required for their position. (TNG: "The Drumhead"; DS9: "Shadowplay", "Starship Down")
As with commissioned officers, there is a rank structure amongst enlisted crew. The term "non-commissioned officer" refers specifically to any enlisted personnel given authority over other personnel. In Starfleet, this could refer to any petty officer (up to master chief).
All commissioned officer ranks, from ensign upward, outrank all enlisted in the chain of command. However, in certain cases, non-commissioned officers can exercise authority over commissioned officers. (Miles O'Brien was one such case in his position as chief of operations aboard Deep Space 9.) Additionally, chief petty officers such as O'Brien wield influence far beyond their place in the rank structure due to their extensive experience and skill, and are expected to mentor junior officers as well as other non-commissioned officers.
Enlisted personnel may be promoted to receive a commission, but must pass necessary examinations and/or attend the Academy.
- Master chief petty officer
- Senior chief petty officer
- Chief petty officer
- Petty officers (specialists 1st, 2nd and 3rd class):
- Crewman (1st, 2nd, and 3rd class)
|Enlisted personnel||Commissioned officers||Generals and 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|
|Positions:||Crewman • Technician • Chief||YMN||TAC • SO • 3rd • 2nd • 1st • CO • DD||Portmaster • Chief of Staff • CinC|
|Services:|| Andorian • Bajoran • Cardassian • Jem'Hadar • Klingon • Romulan • SS • Terran Empire Starfleet • Terran Empire MACO •|
United Earth MACO • United Earth/Federation Starfleet • United States • Vulcan