Giovanni Andrea Ansaldo (1584 – August 18, 1638) was an Italian painter active mainly in Genoa.
Only a few of Ansaldo's works are dated or documented, but most of these paintings listed in the early art historian Raffaello Soprani's 1768 publication about artists in Genoa Le vite de' pittori, scultori, ed architetti genovesi still survive.
Ansaldo's works are typical of the Genoese eclecticism of the early 17th century, influenced by Flemish artists such as Rubens and Anthony van Dyck and the Milanese Giovanni Battista Crespi, Giulio Cesare Procaccini and il Morazzone.
Ansaldo was responsible for the fresco decoration of the cupola of the Basilica della Santissima Annunziata del Vastato of Genova, completed during 1635–1638, just before his death.
Through a complex trompe-l'œil view, it reproduces the interior of a Greek Cross planned church, with Mary ascending to heaven being awaited by the Holy Father[who?]