Ondrej Šmelko (born 1 September 1967) is a former Slovak international football defender who played for clubs in Czechoslovakia and Russia.
Born in Bardejov, Šmelko began playing football for FK Inter Bratislava.
He enjoyed a successful spell with Slovak side Ozeta Dukla Trenčín, and joined Russian side FC Gazovik-Gazprom Izhevsk for the 2003 Russian First Division season.
Šmelko made several appearances for the Slovakia national football team.
This biographical article related to a defender from Slovakia is a stub.