SEL

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
 * Station of Extreme Light, a Chinese laser laboratory.
 * 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