Sulek, Šulek or Sułek are surnames. Notable people with the surname include:
Šulek Bogoslav Šulek (1816–1895), Croatian philologist Martin Šulek (born 1998), Slovak footballer Miroslav Šulek (born 1993), Slovak cross-country skier Peter Šulek (born 1988), Slovak footballer Stjepan Šulek (1914–1986), Croatian musician
Sułek Adrianna Sułek (born 1999), Polish athlete Leszek Sułek (born 1954), Polish politician
See also