Giovanni Battista Costa () was an Italian painter, active in Milan about 1670.
The churches of San Agostino, San Giovanni and San Eustorgio in Milan each have a painting by him.Martin 2021.Benezit 2011.
References
Sources Martin, Andrew John (2021). "Costa, Giovanni Battista (1670)". In Beyer, Andreas; Savoy, Bénédicte; Tegethoff, Wolf (eds.). Allgemeines Künstlerlexikon - Internationale Künstlerdatenbank - Online. K. G. Saur. Retrieved 7 October 2022. "Costa, Giovanni Battista". Benezit Dictionary of Artists. 2011. Oxford Art Online. Retrieved 7 October 2022.