FMJ

FMJ may refer to:


 * Full metal jacket bullet, a bullet consisting of a soft core encased in a shell of harder metal
 * Full Metal Jacket, a 1987 war film produced, directed and co-written by Stanley Kubrick
 * Full Metal Jousting, an American reality television show that debuted on the History Channel
 * Funhit Mein Jaari, a Hindi-language television comedy series