Giovanni Giacomo Coleti or Coletti (May 2, 1734 – August 15, 1827) was an Italian historian and philologist.
He was born in Venice. As a Jesuit, he studied in Piacenza and Bologna, having taught (from 1768) on the Jesuit college in Padua, where he collaborated with Daniele Farlati. After Farlati's death, Coleti continued to work on Illyricum sacrum which was left incomplete, from volumes V (1775) to IX. He also completed and published Illyrian martyrology (Martyrologium Illyricum, 1819). He also published several biographies and spiritual works.
He died in Venice.