Bjorndal is a surname. Notable people with the surname include:
Arne Bjørndal (1882–1965), Norwegian musician and folklorist Karen Bjorndal, American biologist Magnus Bjorndal (1899–1971), American engineer and inventor Martin Tore Bjørndal (1944–2015), Norwegian diplomat Trond Bjørndal (born 1969), Norwegian footballer and manager