Spec

Spec may refer to:
 * Specification (technical standard), an explicit set of requirements to be satisfied by a material, product, or service
 * datasheet, or "spec sheet"

People

 * Spec Harkness (1887-1952), American professional baseball pitcher
 * Spec Keene (1894-1977), American college football, baseball and basketball coach
 * Spec O'Donnell (1911-1986), American film actor
 * Spec Richardson (1922-2016), former general manager of the Houston Astros Major League Baseball team
 * Spec Sanders (1919-2003), American National Football League and All-America Football Conference player
 * Spec Shea (1920–2002), American Major League Baseball pitcher

Science and technology

 * spec, an antibiotic resistance gene against spectinomycin
 * Spectrum of a ring, a mathematical structure often written as Spec(R)
 * Specifier (linguistics), in syntax
 * Short for speculative evolution

SPEC

 * Standard Performance Evaluation Corporation, an organization that produces benchmarks
 * Hampton Inn Court at the Steinke Physical Education Center (SPEC), a Texas A&M University basketball and volleyball arena
 * Solid phase extraction chromatography

Other uses

 * Speculation, the purchase of an asset with the hope that it will become more valuable in the near future
 * Spec, Virginia, United States, an unincorporated community
 * Columbia Daily Spectator, a student newspaper nicknamed the Spec