ALSM

ALSM may refer to:


 * ALSM1 protein, involved in Alström syndrome
 * Airborne laser swath mapping, an application of Lidar
 * ALSM, NASDAQ trading symbol for AlphaSmart
 * Average learning Subspace method, a form of Land cover mapping
 * A.L.Sm., taxonomic author abbreviation of Annie Lorrain Smith (1854–1937), British lichenologist