Jacopo Contarini (Giacomo) (1193 – 6 April 1280[1]) was the 47th Doge of Venice, from 6 September 1275 to his abdication on 6 March 1280.

In 1265, along with Jacopo Dolfin, Contarini concluded a peace treaty with the Emperor on 18 June 1265, that would remain unratified by Venice.

[1] Although he came from one of the most illustrious Venetian families, Contarini, Jacopo was not considered an influential person and he was probably chosen as a compromise between the two major factions.

Being already in his eighties and unable to face the position's challenges—a revolt in Istria and Crete and a war with Ancona—he abdicated as Doge after five years and retired to a monastery, where he died the same year.

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