Keitaro Hoshino (14 August 1969 â 9 October 2021) was a Japanese boxer.
Hoshino turned pro in 1988 and captured the WBA minimumweight title with a decision win over Joma Gamboa in 2000. He defended the belt once before losing it by split decision to Chana Porpaoin in 2001. He recaptured the vacant WBA minimumweight title with a decision win over Gamboa in 2002, but lost the belt in his first defense to Noel Arambulet.