Slowinski or Słowiński is a surname. Notable people with the surname include:
David Slowinski, American mathematician Edward Slowinski (1922–1999), Canadian ice hockey player Joseph Bruno Slowinski (1962–2001), American herpetologist Paul Slowinski (born 1980), Polish-Australian kickboxer Roman Słowiński (born 1952), Polish computer scientist Sebastian Słowiński (born 1998), Polish poet and minority rights activist Władysław Słowiński (1930–2024), Polish composer and conductor
See also Slowinski's corn snake, a subspecies Slowinski’s pipe snake, a species