Hiroyuki Ito (伊藤 裕之, Itō Hiroyuki?), also credited with the spelling Hiroyuki Itou, is a Japanese game producer, game director and game designer who has been working for Square Enix since 1987. He is famous for being the creator of various gameplay systems used in the Final Fantasy series. Notable examples of his work include the Active Time Battle (ATB) system, Ability Points (AP) system, Job Change system, Esper Magicite system, Relic system, Materia system, Charge Time Battle (CTB) system, Guardian Force system, Junction system, Triple Triad card game, Active Time Event (ATE) system, Tetra Master card game, Active Dimension Battle (ADB) system, License Board system and Gambit system.
Hiroyuki Ito is also famous for being the director and game designer of Final Fantasy VI (1994), Final Fantasy IX (2000) and Final Fantasy XII (2006). He is also famous for being the game designer of Final Fantasy V (1992) and Final Fantasy Tactics (1997).