Gaetz is a surname. Notable people with the surname include:

  • Gaetz political family
    • Jerry Gaetz (1914–1964), American politician, member of the North Dakota Senate
    • Don Gaetz (born 1948), American politician, member of the Florida Senate; son of Jerry Gaetz
    • Matt Gaetz (born 1982), American politician (U.S. House of Representatives from Florida 2017–2024); son of Don Gaetz
  • John Gaetz (1857–1937), Canadian politician
  • Leonard Gaetz (1841–1907), Canadian politician
  • Link Gaetz (born 1968), Canadian-Finnish ice hockey player
  • Nelson Gaetz (1907–1988), Canadian politician
  • Sharon Gaetz (21st century), Canadian politician
  • Stephen Gaetz, Canadian professor