Gelegjamtsyn Ösökhbayar (also Gelegjamts Usukhbayar, Mongolian: Гэлэгжамцын Өсөхбаяр; born December 13, 1973 in Battsengel sum, Arkhangai aimag) is a retired amateur Mongolian freestyle wrestler, who competed in the men's super heavyweight category. Considered one of Mongolia's top wrestlers in his decade, Gelegjamts has claimed a bronze medal at the 1998 Asian Games in Bangkok, Thailand, picked up the 130-kg title at the 2001 Asian Wrestling Championships in Ulaanbaatar, and also represented his nation Mongolia at the 2004 Summer Olympics.