Jarl or JARL may refer to:
- Japan Amateur Radio League
- Jarl, the word for Earl in Scandinavian languages
- Jarl in Sweden
- Jarl (mythology), in Norse Mythology, a son of the god Ríg
People with the given name Jarl:
- Jarl Wahlström (1918–1999), 12th General of The Salvation Army
- Jarl Kulle (1927–1997), Swedish actor and director
- Jarl-Thure Eriksson (born 1944), Finnish scientist
- Jarl André Storbæk (born 1978), Norwegian football (soccer) player
- Jarl Espen Ygranes (born 1979), Norwegian ice hockey player