BLS

As an acronym, BLS may stand for:

Companies and brands

 * BellSouth, ticker symbol for the defunct United States telephone company
 * BLS AG, a railway company in Switzerland once called Bern-Lötschberg-Simplon railway
 * Cadillac BLS, a compact executive car

Education

 * Bachelor of Liberal Studies
 * Bachelor of Library Science
 * Boston Latin School, the first school established in North America
 * Brooklyn Law School
 * Bucerius Law School, the first private law school in Germany

Science and medicine

 * Bacterial leaf scorch, a disease state affecting many crops
 * Bare lymphocyte syndrome, a form of severe combined immunodeficiency
 * Basic life support, an emergency medical protocol
 * Blind loop syndrome, small intestinal bacterial overgrowth
 * Brillouin Scattering (or Brillouin Light Scattering)
 * BLS digital signature, a cryptographic signature for verifying that a system validated a transaction

Other uses

 * Buckeye Leadership Society, an honorary leadership Society at The Ohio State University
 * Bureau of Labor Statistics, a United States government agency
 * Black Label Society, an American heavy metal band