Petko is a South Slavic (Петко) masculine given name and East Slavic (Петько) surname. It may refer to:
Given name
Petko Petkov (disambiguation) Petko Slaveykov (1827–1895), 19th-century Bulgarian poet, publicist, public figure and folklorist Petko Staynov (1896–1977), Bulgarian composer and pianist Petko Voyvoda (1844–1900), 19th-century Bulgarian revolutionary Petko Yankov (born 1977), retired Bulgarian sprinter Petko Karavelov (1843–1903), leading Bulgarian liberal politician Petko Ilić (1886–1912), Serbian Chetnik
Surname
Svetlana Petko (born 1970), professional Russian football goalkeeper
Serhiy Petko (born 1994), professional Ukrainian football midfielder
Miroslav Petko (born 1995), professional Slovak footballer
Geography
Petko Slaveykov (village), a village in the municipality of Sevlievo, in Gabrovo Province, in northern central Bulgaria Kapitan Petko voyvoda, a village in the municipality of Topolovgrad, in Haskovo Province, in southern Bulgaria Petko Voyvoda Peak, in the Delchev Ridge, Tangra Mountains, Livingston Island, Antarctica