Adagio in G minor

Adagio in Sol minore per archi e organo su due spunti tematici e su un basso numerato di Tomaso Albinoni (Mi 26) (Adagio in G minor for strings and organ, on two thematic ideas and a figured bass by Tomaso Albinoni), also known as "Albinoni's Adagio", is a 1958 neo-Baroque composition often misattributed to the 18th-century Venetian composer Tomaso Albinoni. In fact, the work was composed by a 20th-century musicologist and Albinoni biographer named Remo Giazotto. The piece was purportedly based on the discovery of a bass line by Albinoni in a manuscript fragment.

Scholarly debate over the existence of the fragment persists, with some seeing the affair as a musical hoax perpetrated by Giazotto. There is no room for doubt when it comes to the source of everything in the Adagio other than the bassline, and Giazotto's authorship of these parts is not disputed.