ELR may refer to:
Transportation
- East Lancashire Railway, a heritage railway in England
- East Lancashire Railway (1844–1859), a former railway in the northwest of England
- East London Railway, see East London Line
- Engineer's Line Reference, an abbreviated code for a section of rail route in the UK
- Cadillac ELR, a luxury hybrid compact coupé
Other
- Employer of last resort, a formal government job guarantee program
- Environmental lapse rate, a term in meteorology
- The Environmental Law Reporter, a publication by the Environmental Law Institute
- Enzyme-linked receptor, a category of receptors involved in cell signalling
- ExtraLife Radio, a radio show created and hosted by cartoonist Scott Johnson
- European Law Reporter, a specialist journal
- Everybody Loves Raymond, an American TV sitcom (19962005)