Heidemann is a German surname. Notable people with the surname include:
Britta Heidemann (born 1982), German épée fencer Dirk Heidemann (born 1961), German ballroom dancer, fashion model, now author, dance sport coach and choreographer Gaille Heidemann, American voice actress Gerd Heidemann (1931–2024), German journalist known for his role in the publication of forged Hitler Diaries Günther Heidemann (1932–2010), boxer from Germany Hartmut Heidemann (1941–2022), German football player Jack Heidemann (born 1949), former right-handed Major League Baseball shortstop Jørgen Heidemann (born 1946), Danish handball player Lavon Heidemann (born 1958), former Lieutenant Governor of Nebraska Matthias Heidemann (1912–1970), German footballer Stefan Heidemann (born 1961), German orientalist at Hamburg University
See also Heideman