AP


 * Gameplay mechanics
 * Action Points, a derived statistic in the Fallout series.


 * Ammunition and weapon mods:
 * 14mm AP, a type of ammunition used in Fallout and Fallout 2.
 * Armor piercing, a type of ammunition used in Fallout, Fallout 2, Fallout: New Vegas and Fallout Tactics.
 * .45 AP improved sights, a weapon mod for the .45 Auto pistol in the Fallout: New Vegas add-on Honest Hearts.
 * .45 AP HD slide, a weapon mod for the .45 Auto pistol in the Fallout: New Vegas add-on Honest Hearts.
 * .45 AP silencer, a weapon mod for the .45 Auto pistol in the Fallout: New Vegas add-on Honest Hearts.


 * Robots and computers:
 * Automated Personality, a computer or robot appearing in the Fallout: New Vegas add-on ''Old World Blues.