Antonio Diziani was an Italian painter of the 18th century, active mainly in painting vedute or landscapes and vistas of Venice.

His father, Gaspare Diziani, was a prominent rococo artist who painted canvases and decorative frescoes, but Antonio was more strongly influenced by Francesco Zuccarelli and Giuseppe Zais. He was a contemporary of Canaletto. In 1774 he was elected a member of the Painting and Sculpture Academy in Venice.