.hack

.hack may refer to:
 * .hack//INFECTION Part 1 for PlayStation 2
 * .hack//MUTATION Part 2 for PlayStation 2
 * .hack//OUTBREAK Part 3 for PlayStation 2
 * .hack//QUARANTINE Part 4 for PlayStation 2
 * .hack//G.U. Vol. 1: Resurrection for PlayStation 2
 * .hack//G.U. Vol. 2 for PlayStation 2
 * .hack//G.U. Vol. 3 for PlayStation 2
 * .hack//FRAGMENT for PlayStation 2