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This article describes the Starfleet rank. For the infantry ranks see first lieutenant and second lieutenant.

Lieutenant is a military rank used in Earth Starfleet and Federation Starfleet, superior to ensign and lieutenant junior grade and subordinate to lieutenant commander and commander. Lieutenants are often technical specialists (navigator, communications officer), heads of small sections, or second-in-command of larger sections (under a lieutenant commander).

The corresponding infantry and Starfighter rank is captain. The rank is also used by the Kellarian System Defense Forces (Star Trek: Remington).

Sogh was the Klingon term for a lieutenant. A platoon of 25 warriors was commanded by a Sogh. (The Dominion War Sourcebook: The Fires of Armageddon)

HistoryEdit

The term comes from the navies of the 20th century. The USN abbreviation was LT.

In the 20th century the word was pronounced 'lef-tenant' by English speakers, except in the USA, where the more regular pronunciation 'loo-tenant' took hold with the help of spelling reformers of the 19th century. Non-Earthians use the American pronunciation. Some Earth people use the traditional pronunciation. (TOSS #11 "Ensign Null")

The Romulan Star Navy and Romulan Ground Forces have ranks that in English are called lieutenant. In the Star Navy it is the rank above sublieutenant and below centurion, while in the RGF it is above sublieutenant and below captain.

Andorian Imperial Guard have ranks that in English are called lieutenant.

Starfleet insigniaEdit

22nd century 2230s
LT (ENT).png
Yellow (ENT).png
LT (2230s).png
Blue (2230s).png
2240s-2250s 2250s 2260s-2270s Early 2270s
(Shoulders/Sleeves)
Late 2270s-2350s
(Shoulders/Sleeves)
LT Gold (2240s-2250s)
Officer (2250s).png
Yellow (2250s).png
LT (TOS).png
Yellow (TOS).png
LT Shoulder (TMP).png
White Shoulder (TMP).png
LT Shoulder (TWOK).png
White Shoulder (TWOK).png
LT Sleeve (TMP).png
Blue Sleeve (TMP).png
LT Sleeve (TWOK).png
White Officer Sleeve (TWOK).png
2350s-2360s 2360s-2370s
service uniform
2360s-2370s
duty uniform
2370s-2380s
LT (Early TNG).png
Red (Early TNG).png
LT (TNG).png
Red (TNG).png
LT (DS9-VOY).png
Red (VOY).png
LT (DS9-VOY).png
Red (DS9).png
2380s 2390s

Alternate realities Edit

2250s 2380s-2400s 2390s 29th century
LT (STXI).png
Yellow (STXI).png
LT (alternate 2380s).png
Red (alternate 2380s).png
LT (alternate 2390s).png
Red (alternate 2390s).png
LT (2800s).png
Blue (2800s).png

Other insigniaEdit

Klingon navy Romulan Star Navy Vulcan
High Command
Klingon Navy - LT Romulan Star Navy - Lt Vulcan - LT (High Command)
Lyran Starfleet Kellarian Navy So'ja
High Command
Lyran SE O-4
O3 (KSDF).png
Silver (KSDF).png
Sojan lt

Starfleet lieutenantsEdit


Enlisted ranks Etc Officer ranks Flag ranks
Starfleet
Officers
Enlisted
Misc.
CR
CA
CN
PO3
PO2
PO1
CPO SCPO MCPO
CMCPO
FMCPO
MCPOSF
WO
CDT
MID
REC
ENS LTJG LT LCDR CDR CAPT
FCAPT
CDRE
RDML
RADM
VADM ADM FADM
Klingon Defense Force
(Ground forces & navy)
Bekk Cpl Sgt MSgt SgtMaj 2nd Lt 1st Lt Capt
(HoH)
Maj LtCol Col Brig
('ech)
LtGen Gen
(Sa')
PO2 PO1 CPO MCPO ENS LTJG LT
(Sogh)
LCDR CDR
(la')
CAPT
(HoD)
CDRE
(totlh)
VADM ADM


Romulan ranks
(Ground forces, Navy & Tal Shiar)
Trooper Sergeant SubLt Lt Capt Maj Cent
Col
Gen MajGen
Uhlan Petty officer Cent SCdr Cdr Cgen Adm (Ar'nal)
2nd Lt 1st Lt Capt Maj Col Gen
Decurion ACent
(erein)
SubLt
(erei'arrain)
Lt
(arrain)
Cent
(enarrain)
SCdr
(erei'riov)
Cdr
(riov)
SAdm
(khre'riov)
VAdm
(erei'enriov)
Adm
(enriov)
HAdm
(rahaen'enriov)
FAdm
(khre'enriov)


Vulcan High Command SLT LT MAJ SCDR CDR CAPT Administrator
Kai Imperium TRN
MNX
IMUN
LGN3
LGN2
LGN1
CLGN CEN SCEN PVT PRN OP TRB
VIC
PR PTR MST LEG IMP
Kellarian System
Defense Force

(Navy & Ground forces)
(Star Trek: Remington)
CR
CN
PO2
PO1
CPO SCPO MCPO ENS SLT LT SCDR CDR CAPT CDRE VADM ADM FADM
PVT
PFC
CPL
SGT
SSG MSG SGM 3LT 2LT 1LT MAJ LTCOL COL MGEN LGEN GEN CGEN
Lyran ranks CR
CN
PO2
PO1
CPO SCPO MCPO CDT ENS LTJG LT LCDR CDR CAPT
FCAPT
CDRE SCDRE VADM COUNT DUKE
KING
So'ja High Command REC
CN
PVT
PO3
PO2
PO1
CPO MC CPL SGT LT MAJ LTCOL COL ADM MADM SADM
Federation Starfighter Corps
(Star Trek: Remington)
AB
Amn
A1C
SrA
SSgt
TSgt
MSgt SMSgt CMSgt
CCM
CMSSC
WO
ACT
2ndLt 1stLt Capt Maj LtCol Col
FCol
BrigGen MajGen LtGen Gen GSC

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