JT

JT may mean:

Arts and media
 Jakobstads Tidning, a Finland-Swedish newspaper
 Jimma Times, owner of the Ethiopian newspaper Yeroo
 Jornal da Tarde, a Brazilian newspaper from São Paulo
 JT (James Taylor album), 1977
 J.T. (Steve Earle & The Dukes album), 2021
 J.T. Lambert, a character in the American television sitcom Step by Step
 J.T. Martin, a character in the TV sitcom Silver Spoons
 JT LeRoy, a literary persona created in the 1990s by American writer Laura Albert
 J.T. Yorke, a character in Degrassi: The Next Generation

Businesses and organizations
 Japan Tobacco, a tobacco company
 Jersey Telecom, the Jersey telephone company
 JT, the IATA airline designator for Lion Air

People

In arts and entertainment
 James "J.T." Taylor (born 1953), lead singer of the band Kool and the Gang
 JT the Bigga Figga (born 1971), a hip-hop artist and producer
 JT the Brick (born 1965), an American talk radio host
 J. T. Brown (disambiguation)
 JT Hodges (born 1977), country music singer
 JT Longoria, former member of the band Adler's Appetite
 JT Money (born 1972), American rapper
 J. T. Smith (disambiguation)
 J. T. Thomas (disambiguation)
 J. T. Walsh, American actor
 J. T. Wedgwood (1782–1856), an English line engraver
 Jerry Trainor (born 1977), American actor and comedian sometimes known as JT
 Justin Timberlake (born 1981), American singer and actor also known as JT
 JT (rapper) (Jatavia Johnson, born 1992), American rapper

In sport

J. T. Compher (born 1995), American ice hockey player
J. T. Miller (born 1993), American ice hockey player
J. T. O'Sullivan (born 1979), American football player
J. T. Realmuto (born 1991), American baseball player
J. T. Snow (born 1968), American baseball player
J. T. Southern (born 1964), American former professional wrestler
J. T. Thatcher (born 1978), American football player
JT Woods (born 1999), American football player
Jayson Tatum (born 1998), American basketball player
Jesse Taylor (born 1984), mixed martial artist also known as JT Money
John Tavares (born 1990), Canadian ice hockey player
Johnathan Thurston (born 1983), an Australian rugby league footballer
Justin Thomas (born 1993), American golfer

In other fields
 Javier Torres Félix (born 1960), Mexican drug lord also known for his alias J.T.
 J.T. Larson (born 2001), American politician
 Justin Trudeau (born 1971), 23rd Prime Minister of Canada

Science and technology
 Haplogroup JT (mtDNA), a human mitochondrial DNA haplogroup
 JT (visualization format), a 3D data format

Other uses
 Junior technician, an airman rank
 Juneteenth
 , symbol for the Tōkaidō Main Line operated by the East Japan Railway Company, and the Itō Line
 "Javelin throw" athletics abbreviation in track and field