The Glasgow School of Art (GSA; Scottish Gaelic: Sgoil-ealain Ghlaschu) is a higher education art school based in Glasgow, Scotland, offering undergraduate degrees, post-graduate awards (both taught and research-led), and PhDs in architecture, fine art, and design. These are all awarded by the University of Glasgow.

The school is housed in a number of buildings around Renfrew Street in the centre of Glasgow, upon Garnethill, an area first developed by William Harley of Blythswood Hill in the early 1800s. The most famous of its buildings was designed by Charles Rennie Mackintosh in phases between 1896 and 1909. The eponymous Mackintosh Building soon became one of the city's iconic landmarks, of international fame. It is a pioneer of the Modern Style (British Art Nouveau style). The building was severely damaged by fire in May 2014 and destroyed by a second fire in June 2018, with only the burnt-out shell remaining. Plans are in place for its rebuilding in accordance with Charles Rennie Mackintosh's style and content.