Agnello Participazio (Angelo Particiaco, Latin: Agnellus Particiacus) is the tenth (traditional) or eighth (historical) Doge of Venice from 811 to 827.
He was born to a rich merchant family in Heraclea and is one of the earliest settlers of the island of Rialto, in which civitas Rivoalti becomes, under him, the civitas Venetiarum.
