FLS
FLS may refer to:

Places 
 Flinders Island Airport, in Tasmania, Australia
 Fordham Law School in New York City, US
 Free Library of Springfield Township in Wyndmoor, Pennsylvania, US
 Frontline States, a former anti-apartheid organization

Organizations 
 Fellow of the Linnean Society
 Fiji Law Society
 Flowserve, a US industrial machinery supplier
 FLSmidth, a Danish technology company
 The Folklore Society, UK
 Forestry and Land Scotland

Science 
 Fibroblast-like synoviocyte, a cell type

See also 
 FL (disambiguation)