Bil could refer to
- Bil - A Norse god
- Beel - A flood pond of the Lower Ganges - Brahmaputra flood plain
- Billion (disambiguation)
- Bil Bil, a New Guinean language
- Bil Baird, American puppeteer
- Bil Keane, American cartoonist
BIL could refer to
- Basic Impulse Level - a measure of the ability of electrical equipment such as Distribution transformers and Switchgear to withstand a lightning strike.
- Billings Logan International Airport - The Billings Logan International Airport (IATA code BIL)
- Brierley Investments Ltd, former name of multinational corporation GuocoLeisure
- Belgisch Instituut voor Lastechniek, the Belgian Welding Institute
- .BIL Image file
- 2-BIL Southern Railway (UK) electric multiple rail units
- Bilbao, Spain
- Brother in law
- Banque Internationale à Luxembourg