Giacomo Cordelli was an Italian painter, active circa 1600-1620.
He was born in Viterbo, and is known for the lunette frescoes, depicting old-testament subjects, in the choir adjacent to the Augustinian church of the Santissimi Trinita in the town. The style is a late-mannerist style, somewhat crude and recalling the style of painting used on maiolica. The subjects include:
- Samson drinks from the jawbone of an ass
- Into the Philistine grain fields, Samson releases the jackals (or wolves) with flames tied to their tails
- Samson carries away the portals of Gaza
- Shadrach, Meshach, and Abednego in the Furnace
- Habakkuk, transported by the angel, brings food to Daniel in the lion's den
- Abraham and the three angels
- Fondazione Zeri Catalogue. Archived 2014-11-29 at the Wayback Machine.
- Associazione Storico-Culturale Sant'Agostino, entry on S. Trinita in Viterbo.
- Brevi notizie della città di Viterbo, e degli uomini illustri dalla medesima; by Gaetano Coretini, Stamperia di San Michele a Ripa Grande, presso paolo Giunchi, (1774) Page 129.