Sebastian Maggi (1414–1496) was an Italian Roman Catholic priest and a professed member of the Dominicans.

"[4] He appointed the monk Girolamo Savonarola to the position of novice master and set that famous Florentine friar on his own path to fame.

Pope Alexander VI chose Father Maggi to investigate revelations that Savonarola claimed were given to him directly from God.

Savonarola appealed the choice and believed that Sebastian - as Vicar-General of the Lombard Congregation - would be biased and try to take over his recently emancipated "San Marco" facility in Florence.

Alexander VI, however, had already decided to give the facility back to the Congregation, making Sebastian Savonarola's canonical superior.