FRL can refer to:
- Fire Resistance Level, a way of specifying fire resistance periods as defined in the Building Code of Australia
- Forlì Airport, Italy
- Frame Representation Language, an Artificial Intelligence data representation
- Freedom Airlines, a US airline
- Friesland, a province in the Netherlands
- Ramon Llull Foundation (Fundació Ramon Llull), an organization for the promotion of Catalan language and culture
- Furnace Room Lullaby, an album by Neko Case & Her Boyfriends