Lieutenant, junior grade is a commissioned rank in Starfleet. They are commonly addressed as "Lieutenant."

This makes it difficult to distinguish which lieutenants are of which grade.

Lieutenant junior grade insignia[edit | edit source]

Starfleet lieutenant junior grade insignia
era general wear command division operations division sciences division
command tactical/military flight-engineering
(admin, pilot, engineer)
security special services sci-ops
(ops, sci & tac ops)
medical
Earth Starfleet ranks
(Built to Lieutenant)
Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2160s)
(Built to Lieutenant)
Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2230s)
(Built to Lieutenant)
Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2240s)
(insignia for all officer grades)
Sleeve insignia. Sleeve insignia Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2250s)
(insignia for all officer grades)
Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2260s) Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2270s)
(Built to Lieutenant)
Uniform sleeve. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2270s-2350s) Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2350s-2366) Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2366-2373) Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2373-2386) Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2386-2410) Uniform shoulder. Uniform shoulder. Uniform shoulder.
Federation Starfleet ranks (2800s)
(Built to Lieutenant)
Uniform shoulder. Uniform shoulder. Uniform shoulder.

Alternate lieutenant junior grade insignia[edit | edit source]

Starfleet alternate lieutenant junior grade insignia
era command division operations division sciences division
Federation Starfleet ranks (2250s) alt
(Built to Lieutenant)
Sleeve insignia. Sleeve insignia. Sleeve insignia.
Federation Starfleet ranks (2386-2410) alt Uniform shoulder. Uniform shoulder. Uniform shoulder.

Positions and Lists[edit | edit source]

Command Division[edit | edit source]

Operations Division[edit | edit source]

Chronology[edit | edit source]

Dates listed are first appearance or mention at that rank except as noted.

2256[edit | edit source]

2257[edit | edit source]

2316[edit | edit source]

2349[edit | edit source]

2353[edit | edit source]

2362[edit | edit source]

2364[edit | edit source]

  • Joseph Carey goes off active duty for treatment
  • Geordi La Forge
  • Worf promoted from Ensign, later promoted to Lieutenant

2365[edit | edit source]

2366[edit | edit source]

2367[edit | edit source]

  • Joseph Carey returns to active duty

2369[edit | edit source]

  • Joseph Carey promoted to Lietenant
  • Veronica Stadi promoted from Ensign

2371[edit | edit source]

  • Veronica Stadi promoted to Lieutenant

2373[edit | edit source]

2375[edit | edit source]

  • Nog promoted from Ensign, later promoted to Lieutenant

2376[edit | edit source]

2379[edit | edit source]

Connections[edit | edit source]

Enlisted ranks Commissioned ranks Flag ranks
Earth SF CREW PO2

PO1

CPO

SCPO


MCPO

ENS LT CMDR CAPT

FCAPT


VICE CDORE

CDORE RADM/2ADM VADM/3ADM 4ADM FADM/5ADM

GADM

Starfleet & SFMC ENS JG

ENS


ENS 1C

LT JG LT LT CMDR CDR CDORE

1ADM

PVT CPL SGT

MASTER SGT

SUBLT

2ND LT

1ST LT CAPT MAJOR LT COL COL BRIG GEN
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