SEL may refer to: Signalling Equipment Ltd, a trading name used by the British toy manufacturer J & L Randall Finnish Food Workers' Union, a trade union in Finland Left Ecology Freedom (Sinistra Ecologia Libertà), Italian political party Selkirkshire, historic county in Scotland, Chapman code Single-event latchup Social and Emotional Learning, a pedagogy focusing on the study and application of Emotional intelligence (EI) Social Enterprise London Swedish Elite League, the English unofficial name of the Elitserien ice hockey league Système d'Échange Local, a French Local Exchange Trading System Art Sensory Ethnography Lab, a filmmaking and anthropology center at Harvard University Serial Experiments Lain, a 1998 anime series Shankar–Ehsaan–Loy, a trio of music composers from India Language Self-learning of English Language SEL: Studies in English Literature, an academic journal Skolta Esperanto Ligo, an Esperanto Scouting association Technology Schweitzer Engineering Laboratories, a worldwide power systems company Search Engine Land, a website covering search engine related news Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC). Standard Elektrik Lorenz, a German electronics firm Systems Engineering Laboratories, an early computer manufacturer specializing in realtime systems System Event Log, the name for a server system logger used by a variety of servers Transportation Mercedes-Benz SEL, an automobile model The former IATA Airport code for Gimpo International Airport in Seoul, Korea (Currently GMP) Southern Evacuation Lifeline, a proposed limited-access highway in Horry County, South Carolina See also Sel (disambiguation)