FLS
FLS is a three letter acronym that can refer to:
- Fire life safety
- Fellow of the Linnean Society of London
- First Language School, a high school in Varna, Bulgaria
- First Level Support, a support level in a multi-tiered technical support structure
- Flavonol synthase, an enzyme in the flavonols metabolic pathway
- Flinders Island Airport IATA airport code
- Flowserve, a world supplier of pumps, valves, seals automation and services to the power, oil, gas, chemical and other industries
- FLSmidth, Inc., Supplier of equipment and services to the global cement and minerals industries.
- Flying Lab Software, a video game developer
- Fordham Law School in New York City
- Free List Suspended, a term used in cinemas to indicate that free tickets are not accepted at a particular performance. This usually applies during the first fortnight after the release of a new film and is imposed on the cinema by the film's distributor.
- Front Line States, an organization established to achieve black majority rule in South Africa
- Fruity Loops Studio, a suite of music-production software
- Freeline skates, a pair of skates