Kostov (Bulgarian or Russian: Костов) is a Bulgarian masculine surname, its feminine counterpart is Kostova. It may refer to Aleksandar Kostov (born 1938), Bulgarian football player Ani Kostova (born 1960), Bulgarian swimmer Boyanka Kostova (born 1993), Bulgarian-Azerbaijani weightlifter Dimo Kostov (born 1947), Bulgarian wrestler Elitsa Kostova (born 1990), Bulgarian tennis player Elizabeth Kostova (born 1964), American author Hari Kostov (born 1959), Macedonian politician Ivan Kostov Nikolov (1913–2004), Bulgarian geologist and mineralogist Ivan Yordanov Kostov (born 1949), Bulgarian politician Julian Kostov (born 1989), Bulgarian actor, filmmaker, swimmer, and pentathlete Kristian Kostov (born 2000), born Russian (half Bulgarian—half Kazakh) singer Liliana Kostova (born 1988), Bulgarian football striker Stanislav Kostov (born 1991), Bulgarian football player Traicho Kostov (1897–1949), Bulgarian politician Bulgarian-language surnames