Square Enix Holdings Co., Ltd. is a Japanese entertainment conglomerate and video game company best known for its Final Fantasy, Dragon Quest and Kingdom Hearts role-playing video game franchises, among numerous others. Outside of video game publishing and development, it is also in the business of merchandise, arcade/amusement facilities and manga publication under its Gangan Comics brand.

Several of Square Enix's franchises have sold over 10 million copies worldwide after 2020, with Final Fantasy selling 168 million, Dragon Quest selling 84 million, and Kingdom Hearts shipping 35 million. In 2005, Square Enix acquired arcade corporation Taito, known for games such as Space Invaders, Bubble Bobble and Darius. In 2009, Square Enix acquired British game publisher Eidos Interactive, which was absorbed into Square Enix Europe to publish titles such as Tomb Raider, Deus Ex and Just Cause.