SMW

SMW may refer to:


 * Semantic MediaWiki, an extension to MediaWiki that allows for annotating semantic data within wiki pages
 * Smara Airport, Western Sahara, IATA Airport Code
 * Smoky Mountain Wrestling, a professional wrestling promotion that held events in the Appalachian area
 * Special marine warning, a warning issued by the National Weather Service to warn of strong or severe storms over a marine area such as a lake or an ocean
 * Super Mario World, a 1990 platformer by Nintendo for the Super Nintendo Entertainment System
 * Shawnee Mission West, a high school in the Shawnee Mission School District in Kansas