Ousman Koli (born 18 October 1988) is a Gambian retired footballer who played as a defender.

[2] In August 2011, he signed a contract with Slovenian second tier side Šenčur.

[3] In February 2012, Koli joined Slovenian top flight team Triglav Kranj.

[4] Koli was a member of the Gambia under-17 team that won the 22 July Peace Tournament, held in Banjul in 2003.

[2] He debuted for the senior team in 2007 in a match against Guinea.