Giulio Mazzoni (1525–1618) was an Italian painter and stuccoist, active during the Renaissance period.
He was born in Piacenza, but studied in Rome under Daniele da Volterra,[1] and was active about the year 1568.
One of the major works in his oeuvre is the Theodoli Chapel in the Basilica of Santa Maria del Popolo which is a gem of Roman Mannerism.
The work was restarted by a new patron, Girolamo Theodoli, the Bishop of Cádiz after 1569 and finished around 1575.
[2] Mazzoni created a harmonious and iconographically coherent ensemble of delicate stuccos, frescos and paintings with the classicising statue of Saint Catherine in the focus of the space.