Giovanni Antonio Fasolo was a late Renaissance Italian painter of the Venetian school, active in Vicenza and surroundings.

A native of Mandello del Lario, he appears to have trained in the Venice studio of Paolo Veronese. By 1557, he was an independent fresco decorator. He worked at the frescoes of some buildings by Andrea Palladio, like Villa Caldogno (with Giovanni Battista Zelotti), Casa Cogollo, and Palazzo del Capitaniato (his last work). He also decorated with Zelotti the Palazzo Porto Colleoni Thiene at Thiene. In 1572 he died by an incident when he was working at the ceiling of the loggia of the Palazzo del Capitaniato in Vicenza.

One of his pupils was Alessandro Maganza.