Schønheyder is a surname. Notable people with the surname include:
Anna Schønheyder (1877–1927), Norwegian painter and textile artist Johan Chr. Schønheyder (1915–2015), Norwegian insurance manager, orienteer and sports official Johan Christian Schønheyder (1742–1803), Danish-Norwegian priest Johan Franciscus Schønheyder (1879–1968), Norwegian ships engineer Johan Martin Schønheyder (17521828), Danish lawyer Rolf Schønheyder (1913–1994), Norwegian sprinter Ulrich Anton Schønheyder (17751858), Danish naval officer Valdemar Schønheyder Møller (17641905), Danish painter