CWL
CWL is an abbreviation for:
- Cardiff Airport (Welsh: Maes Awyr Caerdydd), international airport of the Welsh capital Cardiff and the largest airport in Wales according to the IATA code
- Compagnie Internationale des Wagons-Lits (German: ISG), International Sleeping Car Company, the oldest European company operating sleeping cars, dining cars and luxury trains
- Construction Water Line , English for construction waterline , see waterline
- Commonweal Party , a former political party in South India
- Powiat Włocławski in the Kuyavian-Pomeranian Voivodeship, Poland (license plate)