Aarseth is a Norwegian surname. Notable people with the surname include:
Asbjørn Aarseth (1935–2009), Norwegian literary historian Espen Aarseth (born 1965), Norwegian media scholar Ivar Aarseth (1889–1972), Norwegian politician Sverre Aarseth (born 1934), British astronomer Euronymous, born Øystein Aarseth (1968–1993), Norwegian musician
See also 9836 Aarseth, main-belt asteroid