FMW 2nd Anniversary Show: Fall Spectacular (1991) was a professional wrestling event produced by Frontier Martial-Arts Wrestling (FMW). The event took place on September 23, 1991 at the Kawasaki Stadium in Kawasaki, Kanagawa, Japan. This was FMW's first show at the venue and it would become a venue for FMW's future major events. This was the second edition of the company's flagship event Anniversary Show, commemorating the second anniversary of the company.

Atsushi Onita is a Japanese actor, politician, and semi-retired professional wrestler. He is best known for his work in Frontier Martial-Arts Wrestling (FMW) and is credited with introducing the deathmatch style of professional wrestling to Japan. He is a former All Asia Tag Team Champions alongside Yoshitatsu.