SL may refer to: Arts and entertainment. SL (rapper), a rapper from London. Second Life, a multi-user 3D virtual world. Sensei's Library, an Internet site dedicated to the game of Go. Subdominant leittonwechselklänge. Leica SL, a mirrorless system camera by Leica Camera AG. Business and organizations. Sociedad Limitada, the Spanish version of a private limited company. Politics. Serbian Left (Srpska levica), a political party in Serbia. Stronnictwo Ludowe, a defunct Polish political party. Soyons Libres, a French political party. Transportation and vehicles.
https://en.wikipedia.org/wiki/SL