Tomohiro Ishii is a Japanese professional wrestler currently signed to New Japan Pro-Wrestling (NJPW). He also makes additional appearances for All Elite Wrestling (AEW). He is also known for his work with the independent Fighting World of Japan Pro Wrestling promotion, where he worked backstage as the chairman.

Fighting of World Japan Pro-Wrestling, frequently shortened to World Japan or WJ was a professional wrestling promotion formed in Japan in 2002 by former New Japan Pro-Wrestling employees Riki Choshu and Katsuji Nagashima, who also served as chairmen along with Tomohiro Ishii.