Giovanni Battista Viola (June 16, 1576 – August 10, 1622) was an Italian painter of the early Baroque period in Rome.
Giulio Mancini commented in his writings that Viola was well respected for his landscape canvases, which were documented among the works in the collections of Cardinal Pietro Aldobrandini, Giustiniani, Cardinal Mazarin, and the Pamphilj.
He was a teacher of Bartolommeo Lotto and Pietro Paolo Bonzi (il Gobbo dalle Frutta), and would have been influential for Claude Lorraine.
The biography of Amorini recounts that Viola died mortified after offending the Cardinal Ludovisi.
This article about an Italian painter born in the 16th century is a stub.