J14

J14 may refer to:

Roads

 * County Route J14 (California)
 * Malaysia Federal Route J14

Vehicles

 * HSWMS Kalmar, a Visby-class destroyer of the Swedish Navy
 * LNER Class J14, a British steam locomotive class
 * Shenyang J-14, a speculated Chinese fighter jet

Other uses

 * J-14 (magazine), an American magazine
 * Bacterial pneumonia
 * Elongated triangular bipyramid, a Johnson solid (J14)