SLA
- Alcohol laws of New York
- Canada–United States softwood lumber dispute
- Martín Miguel de Güemes International Airport
- SLA Industries
- School Library Association
- Science Leadership Academy
- Scribus
- Sealed lead-acid battery
- Second-language acquisition
- Service-level agreement
- Short long arms suspension
- Sindhi Language Authority
- Sindhudesh Liberation Army
- Singapore Land Authority
- Soluble liver antigen
- South Lebanon Army
- Special Libraries Association
- Specific leaf area
- Sri Lanka Army
- Stereolithography
- Sudan Liberation Movement/Army
- Symbionese Liberation Army