Zeidler is a German surname. Notable people with the surname include:
Alfred Zeidler, German SS officer
Carl Zeidler (1908–1942), American mayor
David Zeidler (1918–1998), Australian chemist and industrialist
Eberhard Zeidler (born 1926), Canadian architect
Frank Zeidler (1912–2006), American politician
Judith Zeidler (born 1968), German rower
Othmar Zeidler (1850–1911), Austrian chemist
Peter Zeidler (born 1962), German football manager
Susanna Elizabeth Zeidler (1657 – c. 1706), German poet
Wolfgang Zeidler (1924–1987), German legal scholar and judge