Lieutenant commander is a military rank used in Federation Starfleet, superior to lieutenant and subordinate to commander. A lieutenant commander may be a senior officer in a department on a large vessel or starbase, or may be commanding officer or first officer of a smaller vessel.
A lieutenant commander is normally addressed as commander except in ceremonial contexts or printed orders.
The rank is equivalent to the Marines rank of major, wing colonel in the Federation Starfighter Corps, the Cardassian rank of glinn (excepting the Star Trek: Sigils and Unions continuity, where glinn is often equated with the rank of commander), and the Romulan rank of centurion.
- Carina Abia
- Cordelia Chase
- Evelyn Chase
- Heidi Duvall
- Elita Jarani
- Robert Karo
- Eric Kramer
- Saghi Meru
|Enlisted ranks||Non-commissioned officer ranks||Etc||Commissioned ranks||Flag ranks|
|Federation Marine Corps||Pvt||PFC||LCpl||Cpl||Sgt||SSgt||GySgt||MSgt|
|WO||2nd Lt||1st Lt||Capt||Maj||LtCol||Col||BGen||MajGen||LtGen||Gen||GenCorps
|Klingon ground troops||Bekk2||Bekk1||Cpl||Sgt||MSgt||SgtMaj||2nd Lt||1st Lt||Capt||Maj||LtCol||Col||Brig||LtGen||Gen|
|Romulan Star Navy||UHL||(unknown)||SLt||Lt||Cent||SCdr||Cdr||Adm|
|Tal Shiar||2nd Lt||1st Lt||Capt||Maj||Col||Gen|