Arja (given name)
Arja is a Finnish female name and may refer to:
- Arja Hannus, Swedish orienteering competitor
- Arja Kajermo, cartoonist, born in Finland, raised in Sweden, currently residing in Ireland
- Arja Koriseva, award-winning Finnish singer
- Arja Nuolioja, Finnish ski-orienteering competitor and world champion
- Arja Saijonmaa, Finnish singer, political activist and occasional actress
- Arja Salafranca, South African writer, poet and journalist
