Selja may refer to the following:
People Selja Kumari (born 1962), a member of the 15th Lok Sabha of India Sirkka Selja (1920—2017), a Finnish poet and writer
Places Estonia Selja, Hiiumaa Parish, village in Hiiumaa Parish, Hiiu County Selja, Lääne-Viru County, village in Viru-Nigula Parish, Lääne-Viru County Selja, Tori Parish, village in Tori Parish, Pärnu County Selja, Lääneranna Parish, village in Lääneranna Parish, Pärnu County Selja, Rapla County, village in Kehtna Parish, Rapla County Selja, Saare County, village in Saaremaa Parish, Saare County Selja (river), in Lääne-Viru County
Norway Selja, Selje, an island in Selje municipality, Norway; a former Catholic bishopric and now a Latin titular see as Selia
Sweden Selja, Sweden, a village area in Mora
Tunisia Selja Gorges, gorges in the Gafsa valley
See also Selje (disambiguation)