Heyer is a surname. Notable people with the surname include:
Georgette Heyer (1902–1974), English novelist
Hans Heyer (born 1943), German racing driver
John Heyer (1916–2001), Australian documentary filmmaker
John Christian Frederick Heyer (1793 - 1873), American missionary
John Henry Heyer (1831–1905), American politician
Hans-Joachim Heyer (1920–1942), German Luftwaffe ace
Sascha Heyer (born 1972), Swiss beach volleyball player
Shane Heyer (born 1964), Canadian ice hockey linesman
Stephon Heyer (born 1984), American footballer
Ursula Heyer (born 1940), German actress
Volker Heyer (born 1970), German judoka
