Pittoni, Giambattista an Italian canonist, was born at Venice in 1666. He took holy orders and was a priest, and resided in turns at Rome and Venice. He died Oct. 17, 1748. He compiled with great order a collection of the pontifical constitutions and of the decisions of the different Roman congregations (Viterbo, 1745 and ensuing years, 14 vols. 8vo), which is held in great esteem. He left also, Vita di Benedetto XIII (Venice, 1730, 4to): — De commemoratione omnium fidelium defunctorum (ibid. 1739, 8vo): — De octavis festorum (ibid. 1746, 2 vols. 8vo); etc.