SLA

• Martín Miguel de Güemes International Airport, Salta, Argentina, IATA code

• 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

• 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

• 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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