Stefko Konstantinov Velichkov (Bulgarian: Cтeфко Кoнстaнтинoв Вeличкoв; born 15 August 1949) is a former Bulgarian football defender who played for Bulgaria at the 1974 FIFA World Cup.

[1] He also played for Spartak Pleven,[2] Akademik Svishtov, Etar Veliko Tarnovo and CSKA Sofia.