SLA
SLA may mean:
- Second language acquisition, how people learn additional languages
- Service level agreement, a term used in information technology
- Shared line appearance, a technique used in telephony
- SLA Industries, a role-playing game written by Nightfall Games
- Slow left arm, a bowling style in cricket
- Software license agreement, a contract placing restrictions on the use of software
Geography
- Martín Miguel de Güemes Airport (via IATA airport code), in Salta, Argentine
- South Los Angeles
- State Line Avenue, in Texarkana, United States
Science/Engineering
- Sealed lead-acid, a type of lead-acid battery
- Short long arms suspension, a wheel suspension type for vehicles with wishbones of unequal length
- Specific leaf area, Botanist's term describing a property of a leaf on a plant, often used as a measure of leaf "thickness"
- Stereolithography apparatus, a type of rapid prototyping machine
Organizations
- Saint Lawrence Academy, a college preparatory school located in Santa Clara, California
- School Library Association, an association for school librarians
- South Lebanon Army, an Israeli-backed militia during the Lebanese Civil War
- Special Libraries Association, an association for professional librarians working in specialized libraries
- Sri Lanka Army, the oldest and largest of Sri Lanka's armed services
- State Liquor Authority, New York State organization that enforces liquor laws
- Sudan Liberation Army, a rebel group in the Sudanese region Darfur
- Symbionese Liberation Army, kidnappers of Patricia Campbell Hearst