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Lieutenant junior grade is a junior commissioned officer rank used in a number of navies.

United States

Lieutenant (junior grade)
Navy and Coast Guard insignia
Public Health Service and NOAA insignia
Country	United States
Service branch	United States Navy  United States Coast Guard United States Public Health Service Commissioned Corps NOAA Commissioned Officer Corps
Rank group	Junior officer
NATO rank code	OF-1
Pay grade	O-2
Formation	March 3, 1883
Next higher rank	Lieutenant
Next lower rank	Ensign
Equivalent ranks	First lieutenant

Lieutenant (junior grade), commonly abbreviated as LTJG or, historically, Lt. (j.g.) (as well as variants of both abbreviations), is a junior commissioned officer rank of the United States Navy, the United States Coast Guard, the United States Public Health Service Commissioned Corps, and the National Oceanic and Atmospheric Administration Commissioned Officer Corps (NOAA Corps). LTJG has a US military pay grade of O-2, and a NATO rank code of OF-1. The rank is also used in the United States Maritime Service. The NOAA Corps's predecessors, the United States Coast and Geodetic Survey Corps (1917–1965) and the Environmental Science Services Administration Corps or ESSA Corps (1965–1970), also used the rank.

Lieutenant (junior grade) ranks above ensign and below lieutenant and is equivalent to a first lieutenant in the other uniformed services (the Army, Marine Corps, Air Force, and Space Force) and sub-lieutenant in the Royal Navy and the navies of many Commonwealth countries.

Promotion to LTJG is governed by Department of Defense policies derived from the Defense Officer Personnel Management Act of 1980. DOPMA guidelines suggest all "fully qualified" ensigns should be promoted to LTJG. The time for promotion to LTJG is a minimum of two years after commissioning in the Navy or 18 months in the Coast Guard. Lieutenants, junior grade typically lead petty officers and non-rated personnel, unless assigned to small aircraft or on staff duty. A LTJG's usual shipboard billet is as a division officer.

Lieutenant, junior grade is often referred to colloquially as JG. Prior to March 3, 1883, this rank was known in the U.S. Navy as master.

Notable LTJGs

• Neil Armstrong, Korean War naval aviator and astronaut, Commander of Apollo 11
• Francis Bellotti, former Massachusetts Attorney General, served in World War II
• Paul Brown, football coach and executive, spent WW2 as coach of Great Lakes Navy Bluejackets
• George H. W. Bush, WW2 naval aviator and 41st president of the United States
• Johnny Carson, host of The Tonight Show for 30 years, served in WW2
• Albert David, only Atlantic Fleet sailor awarded the Medal of Honor in World War II
• Kirk Douglas, American actor, served in WW2
• Henry Fonda, American film and stage actor, served in WW2
• L. Ron Hubbard, science fiction writer and founder of Scientology, served in WW2
• John F. Kennedy, WW2 PT boat CO and 35th president of the United States
• Bob Kerrey, Navy SEAL Medal of Honor recipient and U.S. senator
• Brian Lamb, founder of C-SPAN, PAO during the Vietnam era.
• Harvey Milk, gay rights activist and San Francisco Board Supervisor, served in Korea
• Thomas R. Norris, Navy SEAL and Medal of Honor recipient
• David Robinson, Naval Academy graduate, NBA Hall of Fame player
• Potter Stewart, associate justice of the U.S. Supreme Court, served in WW2
• Madeline Swegle, Navy Pilot, the United States Navy’s first Black female tactical air pilot after 110 years of American Aviation. Madeline is the first known Black woman to be certified for the TACAIR mission, which enabled her to fly fighters like the F/A-18E/F Super Hornet, EA-18G Growler or F-35C Joint Strike Fighter.
• Malcolm Wilson, New York politician, served in WW2
• William Sylvester White, Illinois Appellate Court justice, member of the Golden Thirteen

Gallery

• Lieutenant (junior grade)
  (Antigua and Barbuda Coast Guard)
• Lieutenant (junior grade)
  (Belize Coast Guard)
• ሌፍተናንት ጁኒየር ግሬድ
  Lēfitenaniti junīyeri girēdi
  (Ethiopian Navy)
• Lieutenant (junior grade)
  (Gambian Navy)
• Lieutenant (junior grade)
  (Guyana Coast Guard)
• Lieutenant (junior grade)
  (Liberian National Coast Guard)
• Lieutenant (junior grade)
  (Jamaican Coast Guard)
• Lieutenant junior grade
  (Namibian Navy)
• Lieutenant junior grade
  (Philippine Navy)
• Lieutenant (junior grade)
  (Sierra Leone Navy)
• Lieutenant (junior grade)
  (United States Navy)
• Lieutenant (junior grade)
  (United States Coast Guard)

See also

• Comparative military ranks
• U.S. Navy officer rank insignia

References

1. 10 USC 5501. Navy: grades above chief warrant officer, W–5
2. 37 USC 201. Pay grades: assignment to; general rules
3. Mallory, John A. (1914). Compiled Statutes of the United States 1913. Vol. 1. St. Paul: Wast Publishing Company. p. 1062.
4. "G.I. Jobs -April 2008". Archived from the original on 2006-03-10.
5. Antigua & Barbuda Defence Force. "Paratus" (PDF). Regional Publications Ltd. pp. 12–13. Archived from the original (PDF) on 7 June 2022. Retrieved 2 March 2020.
6. "Defense Act of 2008" (PDF). 3 September 2008. p. 8. Retrieved 20 November 2017.
7. "BADGES OF RANK". Official Jamaica Defence Force Website. 2019. Archived from the original on 20 August 2020. Retrieved 16 November 2019.
8. "Government Notice" (PDF). Government Gazette of the Republic of Namibia. Vol. 4547. 20 August 2010. pp. 99–102. Retrieved 20 December 2021.
9. "Philippine Navy Ranks". Philippine Navy. Retrieved 1 September 2024.
10. ^ "U.S. Military Rank Insignia". defense.gov. Department of Defense. Retrieved 13 January 2022.

v t e United States uniformed services commissioned officer and officer candidate ranks

Pay grade / branch of service Officer candidate O-1 O-2 O-3 O-4 O-5 O-6 O-7 O-8 O-9 O-10 Wartime grade Special grade Insignia Army CDT / OC 2LT 1LT CPT MAJ LTC COL BG MG LTG GEN GA GAS Marine Corps Midn / Cand 2ndLt 1stLt Capt Maj LtCol Col BGen MajGen LtGen Gen Navy MIDN / OC ENS LTJG LT LCDR CDR CAPT RDML RADM VADM ADM FADM Air Force Cdt / OT 2d Lt 1st Lt Capt Maj Lt Col Col Brig Gen Maj Gen Lt Gen Gen GAF Space Force Cdt / OT 2d Lt 1st Lt Capt Maj Lt Col Col Brig Gen Maj Gen Lt Gen Gen Coast Guard CDT / OC ENS LTJG LT LCDR CDR CAPT RDML RADM VADM ADM PHS Corps OC ENS LTJG LT LCDR CDR CAPT RDML RADM VADM ADM NOAA Corps OC ENS LTJG LT LCDR CDR CAPT RDML RADM VADM No universal insignia for officer candidate rank No official insignia and not currently listed by the Army as an obtainable rank. John J. Pershing's GAS insignia: (collar) (epaulettes) These ranks are reserved for wartime use only, and are still listed as ranks within their respective services Grade is authorized by the U.S. Code for use but has not been created Grade has never been created or authorized

• Military ranks of the United States Navy
• Military ranks of the United States Coast Guard
• Naval ranks