BLS
As an acronym, BLS may stand for:
- BLS (cryptography)
- Bachelor of Library Science
- Bare lymphocyte syndrome
- Basic life support, an emergency medical protocol
- BellSouth, ticker symbol for the United States telephone company
- BLS AG, a railway company in Switzerland once called Bern-Lötschberg-Simplon railway
- Black Label Society, a heavy metal band
- Blackboard Learning System, a virtual learning environment
- Boston Latin School, the first school established in North America
- Brillouin Scattering (or Brillouin Light Scattering)
- British Lichen Society
- Brooklyn Law School
- Bucerius Law School, the first private law school in Germany
- Buckeye Leadership Society, an honorary leadership Society at The Ohio State University
- Bureau of Labor Statistics, a United States government agency
- Cadillac BLS
- WBLS-FM, a New York radio station
- Black Luster Soldier or Black Luster Soldier - Envoy of the Beginning