Final Fantasy Tactics: The War of the Lions is a tactical role-playing game developed and published by Square Enix for the PlayStation Portable (PSP). The game is an updated version of Final Fantasy Tactics made for the PlayStation, which was released in 1997.

Tactical role-playing games, also known as strategy role-playing games and in Japan as simulation RPGs, are a video game genre that combines core elements of role-playing video games with those of tactical strategy video games. The formats of tactical RPGs are much like traditional tabletop role-playing games and strategy games in appearance, pacing, and rule structure. Likewise, early tabletop role-playing games are descended from skirmish wargames such as Chainmail, which were primarily concerned with combat.