| Birth Date: | 21 November 1966 |
| Birth Place: | Shpola Raion, Cherkasy Oblast, Ukrainian SSR, Soviet Union |
Oleksandr Bahach (Ukrainian: Олександр Багач) born 21 November 1966 in village of Matusiv) is a former Ukrainian shot putter, an athlete of the Central Sports Club of the Armed Forces of Ukraine.
During his career he won bronze medals at the Olympic Games and World Championships. Having originally won the gold medal at the 1997 World Championships, he failed a drug test for ephedrine and lost the medal. He had previously served a two-year suspension after testing positive for testosterone in 1989.