Wrestle-1 was a Japanese puroresu or professional wrestling promotion, founded in July 2013 by Keiji Mutoh following his resignation from All Japan Pro Wrestling (AJPW). The core of the promotion's roster was formed by wrestlers loyal to Mutoh, who left AJPW in a mass exodus during June 2013. Mutoh served as the promotion's first president and the head of its parent company, kabushiki gaisha named GEN Sports Entertainment. In March 2017, Kaz Hayashi took over as the new president of Wrestle-1. The promotion held its first event on September 8, 2013, at Tokyo Dome City Hall.

Keiji Muto is a Japanese retired professional wrestler and professional wrestling executive. He is known for his work as The Great Muta in World Championship Wrestling (WCW) and New Japan Pro-Wrestling (NJPW) during the 1980s and 1990s, and from his runs in other Japanese, American, Puerto Rican, and Mexican promotions. He was the president of All Japan Pro Wrestling (AJPW) from 2002 to 2013 and representative director of Wrestle-1 (W-1) from 2013 to 2020.