Petrakis (), feminine Petraki () is a Greek surname. Notable people include:
Dionysios Petrakis, Greek monk and politician Georgios Petrakis (1890–1972), Greek resistance fighter and politician Giannis Petrakis (born 1959), Greek football manager Giorgos Petrakis (born 1988), Greek football manager Harry Mark Petrakis (1923–2021), American writer Maria Petraki (born 1962), Greek chess player Stefanos Petrakis (1924–2022), Greek sprinter Stylianos Petrakis, Greek naval officer Vangelis Petrakis (1938–2026), Greek footballer
See also John Petrakis Park, baseball venue in Dubuque, Iowa, United States Petraki Monastery, monastery in Athens