Square Enix Holdings Co., Ltd. (株式会社スクウェア・エニックス・ホールディングス, Kabushiki-gaisha Sukuea Enikkusu Hōrudingusu^?) TYO: 9684 is a Japanese video game publisher and distribution company best known for its role-playing video game franchises, which include the Final Fantasy series, the Dragon Quest series, and the Kingdom Hearts action RPG series. Its headquarters are located in the Shinjuku Bunka Quint Building in Yoyogi, Shibuya, Tokyo.

The original Square Enix was formed as the result of a merger between Square and Enix. The merger occurred on April 1, 2003, with Square stockholders receiving 0.85 shares of stock in the new company compared to Enix stockholders receiving a one-to-one trade. Enix was the surviving company of the merger. At the time, 80% of Square Enix staff were made up of former Square Co. employees. As part of the merger, many of the top officials within Square Co. assumed the leadership roles in the new corporate hierarchy, including president Yoichi Wada, who was appointed president of the corporation. The original founder of Enix, Yasuhiro Fukushima, is currently the honorary chairman and largest shareholder of the corporation.