SDL

SDL may refer to:

Computing

 * Specification and Description Language, defined by ITU
 * Simple DirectMedia Layer, a C programming language library
 * Services Description Language, a Microsoft fore-runner to Web Services Description Language
 * Scene Description Language, used by POV-Ray
 * Structure Definition Language of OpenVMS
 * Security Development Lifecycle, a software development process

Organizations

 * Party of the Democratic Left (Slovakia) (SDĽ, 1990–2004)
 * Former Party of the Democratic Left (Czech Republic)
 * Party of the Democratic Left (2005), SDĽ, Slovakia
 * Scottish Defence League, a far-right anti-Muslim organisation
 * Social Democratic League of America, 1917–1920
 * Software Development Laboratories, the original name of what is today known as Oracle Corporation
 * Soqosoqo Duavata ni Lewenivanua, a political party in Fiji
 * Space Dynamics Laboratory, at Utah State University, US
 * SDL plc (formerly SDL International), a UK translation tool company

Other uses

 * Saudi Digital Library
 * Shielded data link connector, an electrical signal connector
 * Sexual division of labour
 * Sound Digital - also known as SDL National, a digital radio multiplex in the United Kingdom
 * Standard Deontic Logic, an extension of classical propositional logic
 * Sundsvall-Härnösand Airport, by IATA airport code
 * Scottsdale Airport, by FAA airport code