Sri Lanka, a country

Statue of Liberty

Second Life, a massively multi-user 3D virtual world oriented towards 3D content creation.

Sentential logic

Sendero Luminoso, the "Shining Path" Maoist guerrilla movement

Standard Level, a level of course difficulty in the International Baccalaureate Diploma Programme

Steve Lukather, an American guitarist

Shia LaBeouf, a popular actor

San Leandro, California

Serjeant-at-law, an obsolete legal position in the United Kingdom

ScoutLink IRC ScoutLink IRC - an International Chat Network for Scouts and Guides.

sea level

Sexy Losers, a webcomic

Slalom skiing

Rio Sul Serviços Aéreos Regionais IATA code

superlattice

Stronnictwo Ludowe, a defunct Polish party

Super League

Sl, the abbreviation for the orchid genus Sophrolaelia

.sl, the ISO country code for Sierra Leone.

Southern League (baseball), a Class AA league in Minor League Baseball

SL Corporation, a Korea's auto parts company

The Mercedes-Benz SL an automobile

Storstockholms Lokaltrafik, public transport operator in Stockholm

special linear group, a group of matrices

Starex Limousine, technical by StarCraft Van royalty, a car built by Hyundai Motor Company.

Sensei's Library, a wiki containing a wealth of knowledge about the game of Go.

The complexity class SL; see SL (complexity)

Suburban Legends, ska band based in Orange County, California.

Slovenian language (ISO 639)

Stereolithography, a method of solid freeform fabrication or layered manufacturing using UV-curable photopolymer.