Marino Faliero was the fifty-fifth Doge of Venice, appointed on 11 September 1354. He was sometimes referred to simply as Marin Falier.

He attempted a coup d'etat in 1355, at the time being Doge himself, but with the intention of declaring himself Prince. This failed action is mostly attributed to a combination of a strong hatred for nobility and his senility (he was in his seventies at the time). He pleaded guilty to all charges and was executed and his body mutilated. Ten additional ringleaders were hung on display from the Palazzo Ducale.

He was condemned to Damnatio Memoriae, and as such was the only Doge of the first seventy-six not to have his portrait displayed in the Sala del Maggior Consiglio (Hall of the Major Council) in Palazzo Ducale (Doge's Palace) on St Mark's Square.