Lieutenant Commander is a traditional naval rank. It was once used in the old navies of Earth, among them the United States Navy and the Royal Navy. In these organizations, a lieutenant commander was a grade between the ranks of lieutenant and commander.
A lieutenant commander can serve as either the commanding officer or executive officer of small- to medium-sized vessels or serve as the department head (in addition to being the second officer or third officer) onboard a larger vessel.
Known Lieutenant Commanders[]
- Montgomery Scott - USS Enterprise
- Leonard McCoy - USS Enterprise
- Data - USS Enterprise-D
- Deanna Troi - USS Enterprise-D
- Tuvok - USS Voyager
- Tem Inasi - USS Enterprise-F
- Korlo - USS Marvel
- Five of Seven - USS Marvel
- Everett Jackson - USS Marvel
- Ven Opa- USS Endeavour
- Idrall Dusol- USS Endeavour
- Angelo Valentine - USS Endeavour
- Elise Rosen - USS Harrisburg
Rank insignia of Starfleet lieutenant commanders[]
| Command-Service | Command-Duty | Operations-Service | Operations-Duty | Sciences-Service | Sciences-Duty | |
|---|---|---|---|---|---|---|
| 2270s | 
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| 2270s | 
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| 2280s | 
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| 2350s | 
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| 2360s | 
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| 2370s | 
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Related links[]
External links[]
- Lieutenant commander article at Memory Alpha, the canon Star Trek wiki.
- Lieutenant commander article at Memory Beta, the non-canon Star Trek wiki.
- Lieutenant commander article at Star Trek Expanded Universe.