Antonio Molinari (January 21, 1655 – February 3, 1704) was an Italian painter of the Baroque era of Venice.
Son of a painter, he apprenticed with Antonio Zanchi in Venice. He was strongly influenced by the vigorous and athletic paintings of Neapolitan painters like Luca Giordano. He typically painted tumultuous narratives of mythology and religion in large canvases. This would influence his pupil (1697–1703), Giovanni Battista Piazzetta, and his grand manner style.
Among his works are the Feeding of the Five Thousand (1690; San Pantalon, Venice) and the Death of Uzzah (c. 1695; Santa Maria degli Angeli in Murano); Fight of Centaurs and Lapiths (c. 1698, Ca' Rezzonico).