Justin Timberlake, singer

John Terry, English footballer who is Chelsea and England captain.

Japan Tobacco, a cigarette manufacturer

J. T. the Brick, the stage name of radio host John Tournour

JT (visualization format), a 3D data format

The IATA airline designator for Lion Air

JT the Bigga Figga, a hip-hop artist and producer

JT (album), by James Taylor

Junior Technician, an airman rank

Jakobstads Tidning, a Finland-Swedish newspaper

Haplogroup JT (mtDNA), a human mitochondrial DNA haplogroup

Jonathan Taylor,a school boy from tollerton