Square Electronic Arts L.L.C., also known as Square EA, was a joint venture between console video game developers Square Co., Ltd. and Electronic Arts. Announced on April 27, 1998, Square EA was based in Costa Mesa, California and operated under the supervision of Square president and CEO Jun Iwasaki , and was responsible for publishing and marketing all games produced by Square in North America. Conversely, Electronic Arts Square K.K, formed at the same time and based in Japan, was responsible for publishing and marketing games produced by Electronic Arts in Asia. Under the terms of the agreement, Electronic Arts owned 30 percent of Square EA, and Square owned 30 percent of EA Square.

Square EA proved to be very successful, and during its five years of existence released a higher proportion of localized Square titles to the American market than ever before. EA Square, on the other hand, was somewhat less successful, and struggled to make an impact on the Asian videogame market, which has been traditionally difficult for American game developers to break into.

Following the announcement of the merger between Square and former competitor Enix in 2003, Square purchased back Electronic Arts' stake in Square EA, and folded it back into Square Soft, Inc., it's North American subsidiary, which was subsequently renamed Square Enix USA, Inc. and continues to publish Square Enix's titles in North America.