Petko Yankov (Bulgarian: Петко Янков; born 6 October 1977) is a retired Bulgarian sprinter who specialized in the 200 metres.
His personal best time was 20.27 seconds, achieved in June 1999 in Athens.
This ranks him second among Bulgarian 200 metres sprinters, only behind Nikolay Antonov.
At the beginning of the 2000s he left Bulgaria to study in USA and competed for several years for Central Missouri State University until 2005.
This biographical article relating to Bulgarian athletics is a stub.