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