Starfleet lieutenant commanders

Multiple realities
(covers information from several alternate timelines)

In the history of Starfleet, there have been many officers holding the rank of lieutenant commander.

Lieutenant commanders

Name	Post	Position	Division	Dates	Species	Note
Adislo, Hars			Sciences	2375	Bolian
Airiam	USS Discovery	Bridge officer	Sciences	2256-57	Augmented Human	KIA in 2257
Albert			Operations	2368	Human
Alfaro, Edith K.	USS Exeter (NCC-26531)			2374		MIA in 2374
Argyle	USS Enterprise (NCC-1701-D)	chief engineer	Operations	2364	Human
Baskin, Daryl	USS Matte Fringe			2364
Bernard, Alan	USS Voyager			2372
Bowen, Steve	USS Matte Fringe			2364
Braga, Brannon	USS Enterprise (NCC-1701-D)			2369
Brownfield, Dick	USS Voyager			2372
Cavit	USS Voyager	executive officer	Command	2371	Human	KIA in 2371
Clark, Bev	USS Robert Louis Stevenson			2364
Crusher, Jack	USS Stargazer		Command	2354	Human	KIA in 2354
Culber, Hugh	USS Discovery	Chief medical officer	Sciences	2256	Human
Curry, Dan	USS Enterprise (NCC-1701-D)			2369
Daren, Nella	Starbase 218 USS Enterprise (NCC-1701-D)	head of the stellar sciences department	Sciences	2369	Human
Data	USS Enterprise (NCC-1701-D) USS Enterprise (NCC-1701-E)	operations officer executive officer	Operations Command division	2360-2379	Soong-type android	KIA in 2379
Dax, Jadzia	Deep Space 9	chief science officer	Sciences	2372-2374	Trill (joined)	KIA in 2374
Dealt, Hester	Federation Medical Collection Station	Medical trustee	Sciences	2365	Human
Dean, Doug	USS Voyager			2372
de Graff, Monty	USS Matte Fringe			2364
Duder, Dorothy R.	USS Repulse USS Wyoming USS Cochrane Starbase 153 Starbase 129			2374		KIA in 2374
Durbrow, Doug	USS Robert Louis Stevenson			2364
Echevarria, Rene	USS Enterprise (NCC-1701-D)			2369
Eddington, Michael	Deep Space 9	security chief	Operations	2371-2372	Human	Defected to the Maquis in 2372
Finney, Benjamin	USS Enterprise (NCC-1701)	records officer	Command	2267	Human
Fukai, Arlene	USS Enterprise (NCC-1701-D)			2369
Giotto	USS Enterprise (NCC-1701)	security chief	Operations	2267	Human
Gort	Starfleet Academy			2285
Grodnick, T.	Starfleet Academy	Astrogation Instructor		2285
Hobson, Christopher	USS Sutherland	executive officer	Command	2368	Human
Hoffmeister, Ed	USS Matte Fringe			2364
Holst, Sandy A.	USS Repulse			2374		MIA in 2374
Howard, Merri	USS Voyager			2374	Human
Hudson, Calvin	Demilitarized Zone	attaché to the Demilitarized Zone	Command	2370	Human	Defected to the Maquis in 2370
James, Richard	USS Enterprise (NCC-1701-D)			2369
Kirk, George	USS Kelvin	First officer	Command division	2233	Human
Koslowsky, John	USS Matte Fringe			2364
La Forge, Geordi	USS Enterprise (NCC-1701-D) USS Enterprise (NCC-1701-E)	chief engineer	Operations	2366-2379	Human
Lang	USS Enterprise (NCC-1701)	tactical officer	Command^[1]	2267	Human	KIA in 2267
Lee, Don	USS Matte Fringe			2364
Leijten, Susanna				2367	Human
Leprich, Kathy S.	USS Sarajevo USS Tecumseh USS Akagi USS Zapata			2374		KIA in 2374
Livingston, David	USS Voyager			2374
Lojur	USS Excelsior	Helmsman	Operations	2293	Human
Longo, J.	Starfleet Academy	Engineering Instructor		2285
Lynch, Leland T.	USS Enterprise (NCC-1701-D)	engineer	Operations	2364	Human
MacDougal	USS Enterprise (NCC-1701-D)	chief engineer	Operations	2364	Human
Markel, Tom	USS Ariel	commanding officer	Command	2269	Human
McCoy, Leonard	Capella IV USS Enterprise (NCC-1701)	chief medical officer	Sciences	2266-2269	Human	Promoted to commander in 2269
McGarry, L.	USS Voyager			2370s		KIA prior to 2377
Mees, Jim	USS Voyager	Planetary Geosciences Division		2374
Mitchell, Gary	USS Enterprise (NCC-1701)	navigator	Operations^[1]	2265	Human	KIA in 2265
Monson, Jon S.	USS Akagi USS Zapata			2374		KIA in 2374
Moore, Ronald	USS Matte Fringe			2364
Mulhall, Ann	USS Enterprise (NCC-1701)	astrobiologist	Operations^[1]	2268	Human
Nambue	USS Shenzhou	Chief medical officer	Sciences	2256	Human
Neuss, Wendy	USS Enterprise (NCC-1701-D)			2369
Piersall	USS Prometheus		Command	2370	Human
Piller, Michael	USS Voyager			2374
Remmick, Dexter	Office of the Inspector General Starfleet Command		Command	2364	Human
Riker, William	USS Potemkin USS Hood	executive officer	Command	2361-2364	Human	Promoted to commander in 2364
Rossa, Connor	Galen IV		Command	2353	Human	KIA in 2353
Saru	USS Shenzhou	Chief science officer	Sciences	2256	Kelpien	Promoted to commander in 2256
Sato, Hoshi				2160s	Human	Resigned in the mid-2160s
Scott, Montgomery	USS Enterprise (NCC-1701)	chief engineer	Operations	2266-2269	Human	Promoted to commander in 2269
Shelby	Starfleet Command		Command	2366-2367	Human	Promoted to commander in 2367
Sisko, Benjamin	USS Okinawa USS Saratoga Utopia Planitia Fleet Yards	Executive officer Yard engineer	Command	2366-2369	Human	Promoted to commander in 2369
Sofak	Starfleet Academy			2285
Spock	USS Enterprise (NCC-1701)	chief science officer	Sciences	2266-2267	Vulcan-Human hybrid	Promoted to commander in 2267
Stamets, Paul	USS Discovery	Chief engineer	Sciences	2257	Human
Sulu, Hikaru	USS Enterprise (NCC-1701)	helmsman	Operations	2270s	Human	Promoted to commander by 2285
Surma, Ron	USS Enterprise (NCC-1701-D)			2369
Syvar			Sciences	2371	Vulcan
Takemura, David	USS Matte Fringe			2364
Troi, Deanna	USS Enterprise (NCC-1701-D)	counselor	Sciences	2364-2370	Human-Betazoid hybrid	Promoted to commander in 2370
Tucker, Steve	USS Enterprise (NCC-1701-D)			2369
Tuvok	USS Voyager	security chief	Operations	2374-2378	Vulcan
Uhura, Nyota	USS Enterprise (NCC-1701)	communications officer	Operations	2270s	Human	Promoted to commander by 2285
Valtane, Dimitri	USS Excelsior	chief science officer	Sciences	2293	Human
Vanderweg, Greta	Deep Space 9	science officer	Sciences^[2]	2375	Human	KIA in 2375
Woodard, Jody	USS Equicon			2364
Woods, Beth	USS Yamato	Second officer		2365		KIA in 2365
Worf	USS Enterprise (NCC-1701-D) Deep Space 9 IKS Rotarran	security chief strategic operations officer first officer	Operations Command	2371-2379	Klingon
Yacobian, Brad	USS Enterprise (NCC-1701-D)			2369
Ziegler, T.	USS Voyager			2370s		KIA prior to 2377

Illusory lieutenant commanders

Name	Post	Position	Division	Dates	Species	Note
Worf	USS Enterprise (NCC-1701-D)	operations officer	Operations	2383	Holographic representation of a Klingon

Alternate or parallel lieutenant commanders

Name	Post	Position	Division	Dates	Species	Note
Icheb	USS Voyager		Command	2394	Brunali
Kirk, George	USS Kelvin	First officer	Command division	2233	Human	KIA in 2233
McCoy, Leonard	USS Enterprise(NCC-1701)	Chief medical officer	Sciences	2258	Human
McCoy, Leonard	ISS Enterprise (NCC-1701)	chief medical officer	Sciences	2267	Terran
Paris, Tom	USS Voyager		Command	2378-2379	Human
Scott, Montgomery	USS Enterprise(NCC-1701)	Chief engineer	Operations	2258	Human
Scott, Montgomery	ISS Enterprise (NCC-1701)	chief engineer	Operations	2267	Terran
T'Pol	ISS Enterprise (NX-01) USS Defiant ISS Avenger	chief science officer	Sciences	2155	Vulcan
Yor		Time soldier	Operations	2379	Betelgeusian

Other lieutenant commanders

Name	Post	Position	Division	Dates	Species	Note
Jason Hayek	USS Intrepid		Command	2374	Alias of a Human	Possible Costuming Error: Wore provisional lt. cmdr. pip
James, Richard	USS Voyager			2374	Human	Known to hold the rank of admiral
Lauritson, Peter	USS Voyager			2374	Human	Known to hold the rank of vice admiral
Nog	USS Valiant	chief engineer	Operations	2374	Ferengi	Field promotion
Piller, Michael	USS Voyager			2374	Human	Known to hold the rank of admiral
Rand, Janice	USS Excelsior	communications officer	Operations	2293	Human	Costuming Error: lieutenant junior grade
Sonak	USS Enterprise (NCC-1701)	chief science officer	Sciences	2270s	Vulcan	Seen as "Commander" referred to in Credits as Lt. Cmdr.
Tuvok	USS Voyager	security chief	Operations	2371	Vulcan	Costuming Error: lieutenant
Valeris	USS Enterprise (NCC-1701-A)	helmsman	Sciences^[1]	2293	Vulcan	Possible Costuming Error: lieutenant

Gallery of unnamed lieutenant commanders

In addition, there was at least one more female lieutenant commander aboard the USS Enterprise.

Background information

↑ ^1.0 ^1.1 ^1.2 ^1.3 This officer wore a different division color than indicated by their apparent position.
↑ This character was unseen in this position, and the division is assumed from their position.

Numerous officers were often referred to as commanders, or wore commander's rank insignia, but were actually other ranks. In TNG: "The Best of Both Worlds", Jean-Luc Picard remembers meeting Lieutenant Commander Riker, but Riker was wearing commander's insignia in the corresponding scene in TNG: "Encounter at Farpoint". This happened in TOS also, as Spock was referred to as an lieutenant commander in TOS: "Court Martial" even though he regularly wore commander's stripes up to and including that point. The same went for Benjamin Finney in that episode and Giotto in TOS: "The Devil in the Dark", both of whom wore commander's insignia but were clearly referred to as lieutenant commander in dialogue. The reverse happened to Chakotay, who wore lieutenant commander's insignia but was only referred to as commander for VOY's entire run.

[Div-1] 1.0 ^1.1 ^1.2 ^1.3 This officer wore a different division color than indicated by their apparent position.

[Assumed-2] This character was unseen in this position, and the division is assumed from their position.

[1]

[2]