{{wiktionary|SLA}} '''SLA''' may refer to:
==Geography== * Martín Miguel de Güemes International Airport, Salta, Argentina, IATA code
==Science and engineering== * Sealed lead-acid battery * Second-language acquisition * Short long arms suspension, in vehicles *Soluble liver antigen or O-phosphoseryl-tRNA(Sec) selenium transferase, an enzyme * Spacecraft Lunar Module Adapter, part of Apollo/Saturn S-IVB * Specific leaf area, ratio of leaf area to dry mass on a plant * Stereo lithographic apparatus, a 3D printing technology
==Organizations== * Science Leadership Academy, Philadelphia, Pennsylvania, US * School Library Association * Sindhi Language Authority, Pakistan * Sindhudesh Liberation Army, a separatist organisation in Pakistan *Singapore Land Authority * South Lebanon Army, Lebanese Civil War militia * Special Libraries Association, for librarians * Sri Lanka Army * State Liquor Authority, New York, US * Sudan Liberation Movement/Army, a rebel group in Darfur * Symbionese Liberation Army, 1970s US radical group
==Other== * Service-level agreement * SLA Industries, a role-playing game * File format used by Scribus software * Softwood Lumber Agreement between US and Canada
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