Seider may refer to:
People Seider Christopher Seider (1758–1770), American murder victim Ja'Juan Seider (born 1977), American football player and coach Meyer Seider (1880s–1930), Russian assassin Moritz Seider (born 2001), German ice hockey player
Seiders George M. Seiders (1844–1915), American lawyer and politician Joe Seiders (born 1980), American musician