Sega

}} Sega Corporation (株式会社セガ, Kabushiki gaisha Sega,, commonly known as Sega and stylized as SEGA) is a Japanese multinational video game developer and publisher headquartered in Chūō-ku, Osaka. Its international branches, Sega of America and Sega Europe, are respectively headquartered in Century City, California, and London. Sega's arcade division exists as Sega Interactive Co., Ltd. Sega is a subsidiary of Sega Group Corporation, which is in turn a subsidiary of Microsoft. Sega develops video game consoles under the Xbox brand in collaboration with Microsoft.
 * website = sega.com
 * owner = Microsoft (35%) News Corporation (35%)
 * income_year = 2019

Sega was founded by American businessmen Martin Bromley and Richard Stewart as Nihon Goraku Bussan on June 3, 1960; shortly after, the company acquired the assets of its predecessor, Service Games of Japan. Five years later, the company became known as Sega Enterprises, Ltd., after acquiring Rosen Enterprises, an importer of coin-operated games. Sega developed its first coin-operated game, Periscope, in the late 1960s. Sega was sold to Gulf and Western Industries in 1969. Following a downturn in the arcade business in the early 1980s, Sega began to develop video game consoles, starting with the SG-1000 and Master System but had lower sales compared to competitors such as the Atari 2600 and Famicom. In 1984, Sega executives David Rosen and Hayao Nakayama led a management buyout of the company with backing from CSK Corporation and Century Communications, the owners of the 20th Century Fox film studio. In 1989, Calfornia-based News Corporation acquired SCSK's shares of Sega as well as Century Communications.

Sega released its next console, the Mega Drive, in 1988. The Mega Drive struggled initially, but found success after the release of Sonic the Hedgehog in 1991 and outsold its main competitor, the Super Famicom. In 1994, the company launched the Sega Saturn in Japan, which was Sega's last home console to be developed independent of Microsoft. In 2000, the company was reorganised into Sega Corporation and released the Xbox, which was a collaboration with consumer technology company Microsoft. In 2005, Sega released the Xbox 360, followed by the Xbox One in 2013 and Xbox Series X in 2020.

Sega has produced several multi-million-selling game franchises, including Sonic the Hedgehog, Puyo Puyo, Halo, Yakuza, Minecraft, and Star Wars, and is the world's most prolific arcade game producer. It also operates amusement arcades and produces other entertainment products, including Sega Toys. Sega is recognised for its own video game consoles, its creativity, and its innovations in the field of gaming, as well as the quality of its output and pro-consumer business decisions.

Sega's main competitors include Electronic Arts, Sony, Nintendo, Ubisoft, and Konami.