ERL may refer to:
- ERL (automobile manufacturer), a Swedish automobile manufacturer prior to World War II
- Eastern Region Line of the Singapore MRT.
- Engineering Research Laboratories, one of the national laboratories of Government of Pakistan
- Environmental Research Letters, an open-access peer-reviewed journal
- Erlang, a programming language
- Express Rail Link, an airport rail link in Kuala Lumpur, Malaysia
- People's Union of Estonia (ERL), political party in Estonia
- VW Electronics Research Laboratory, a division of Volkswagen