Square Enix Company, Limited (株式会社スクウェア・エニックス, Kabushiki-gaisha Sukuwea Enikkusu?) TYO: 9684 is a Japanese video game company best known for its console role-playing game franchises, which include the Final Fantasy series, the Dragon Quest series (known as Dragon Warrior in North America from 1989 until 2005), and the Kingdom Hearts series. Square Enix was formed as the result of a merger between rivals Square Co. and the Enix Corporation.

On April 1, 2003, Enix legally absorbed Square, with Square stockholders receiving 0.85 shares of stock in the new company compared to Enix stockholders receiving a one-to-one trade. Despite this, many top officials within Square assumed leadership roles in the new corporate hierarchy, including Square president Yōichi Wada, who was appointed president of the new corporation.

Square Enix, the maker of many popular Final Fantasy RPG games, released Final Fantasy XI, it's first MMORPG for the PlayStation 2 in 2002, and later for the PC.