Frieder is both a surname and a masculine given name, a variant of Friedrich. People with the name include:
Surname: Armin Frieder (1911–1946), Slovak Neolog rabbi Bill Frieder (1942), former basketball coach Katalin Frieder (1915–1991), Hungarian pianist
Given name: Frieder Bernius (1947), German conductor Frieder Birzele (1940–2023), German politician Frieder Burda (1936–2019), German art collector Frieder Gröger (1934–2018), German mycologist Frieder Lippmann (1936–2023), German politician Frieder Nake (1938), German computer scientist Frieder Weissmann (1893–1984), German conductor and composer Frieder Zschoch (1932–2016), German musicologist