Antonio Grimani (Latin: Antonius Grimanus; 1557 – 26 January 1628) was bishop of Torcello from 1587 to 1622, Apostolic Nuncio to Florence from 1605 to 1616, and Patriarch of Aquileia from 1622 to his death in 1628.

He received the episcopal consecration in Rome on 12 April 1610 by the hands of Cardinal Giovanni Battista Castrucci.

[4] On 22 May 1618 he was appointed coadjutor bishop with the right of succession to the Patriarch of Aquileia.

Shortly later, in September 1618, he resigned as bishop of Torcello.

[2] Antonio Grimani died in Venice on 26 January 1628 and was buried in the family chapel in the church of San Francesco della Vigna.