GLR may refer to:
- Central Mountain Air, a Canadian airline
- Gartell Light Railway, in England
- Gaylord Regional Airport, in Michigan
- Glaro-Twabo language
- Glória Station, of the Rio de Janeiro Metro
- GLRA2, a protein
- GLR parser
- Glycine receptor
- Great Lakes Relay, a running competition in Michigan
- Greater London Radio, now BBC Radio London
- Grupo Latino de Radio, an American radio network
- Gwalior Light Railway, in India
disambiguation page lists articles associated with the title GLR.
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