Lieutenant, Junior Grade

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Lieutenant, Junior Grade (LTJG), is a commissioned rank in the United States Navy, the Coast Guard, the National Oceanic and Atmospheric Administration Commissioned Corps and the Public Health Service Commissioned Corps ranking above an Ensign and below a Lieutenant. As an armed forces commissioned officer, a Lieutenant, J.G. leads non-commissioned officers and enlisted personnel.

Until achieving the rank of Commander, it is customary to address junior naval officers as "Mister." For example, LTJG Rogers might be addressed as "Mister Rogers," or as "Lieutenant Rogers."

The time for promotion to LTJG is a minimum of two years after commissioning in the Navy or eighteen months in the Coast Guard.

The equivalent rank in the United States Army, United States Marine Corps and United States Air Force is First Lieutenant. In the Royal Navy and the navies of many Commonwealth countries, the equivalent rank is Sub-Lieutenant.

	Student Officer	O-1	O-2	O-3	O-4	O-5	O-6	O-7	O-8	O-9	O-10	Special (wartime only)	Special (post war honor only)
Image:Flag of the United States.svg U.S. commissioned officer ranks
		Image:US-OF1B.svg	Image:US-OF1A.svg	Image:US-OF3.svg	Image:US-OF4.svg	Image:US-OF5.svg	Image:Colonel insignia.svg	Image:US-OF7.svg	Image:US-OF8.svg	Image:US-OF9.svg	Image:US-OF10.svg	Image:US-OF11.svg
Army:	CDT/OC	2LT	1LT	CPT	MAJ	LTC	COL	BG	MG	LTG	GEN	GA	General of the Armies
Marine Corps:	Midn	2ndLt	1stLt	Capt	Maj	LtCol	Col	BGen	MajGen	LtGen	Gen	(no equivalent)	(no equivalent)
Navy:	MIDN/OC	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	FADM	Admiral of the Navy
Air Force:	Cadet (CDT)/OT	2nd Lt	1st Lt	Capt	Maj	Lt Col	Col	Brig Gen	Maj Gen	Lt Gen	Gen	Gen of the Air Force	(no equivalent)
Coast Guard:	CDT	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	(no equivalent)	(no equivalent)
PHSCC:	(no equivalent)	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	ADM	(no equivalent)	(no equivalent)
NOAA Corps:	(no equivalent)	ENS	LTJG	LT	LCDR	CDR	CAPT	RDML	RADM	VADM	(no equivalent)	(no equivalent)	(no equivalent)