Wrestle-1 (レッスル・ワン Ressuru Wan?) is 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 serves as the president of the promotion and runs it through a kabushiki gaisha named GEN Sports Entertainment. The promotion held its first event on September 8, 2013, at Tokyo Dome City Hall.