Vasil Kirkov (born 13 March 1999) is an American professional tennis player.
Kirkov has a career high ATP singles ranking of 760 achieved on 10 September 2018.
He also has a career high ATP doubles ranking of 515 achieved on 5 November 2018.
Kirkov made his Grand Slam main draw debut at the 2017 US Open after receiving a wild card for winning the under-18 boys championship with Danny Thomas.