Guido Costa (born 1957 in Turin) is an Italian curator, writer, and gallerist. Graduating in philosophical aesthetics in 1982, he initially wrote plays, radio works, and cultural journalism before becoming an independent curator in the early 1990s. He curated exhibitions across Europe, directed the Theoretical Events gallery in Naples (1994–1999), and worked closely with internationally recognized artists including Nan Goldin, Hiroshi Sugimoto, John Baldessari, Damien Hirst, and Carsten Höller. In 1999 he founded Guido Costa Projects in Turin, a gallery known for showcasing major contemporary artists and participating in global art fairs. Costa co-founded the publishing house West Zone/Trolley Books in 1996, served as artistic director at the Spinola Banna Foundation from 2005 to 2015, and since 2020 has been president of the Paul Thorel Foundation dedicated to digital arts. He divides his time between Turin and Naples.