Niccolò Albergati was an Italian Roman Catholic prelate and professed member from the Carthusians. He became a cardinal and had served as a papal diplomat to France and England in addition to serving as the Bishop of Bologna from 1417 until his death.
He accepted the position as bishop in obedience despite his extreme reluctance to accept the position but carried out his duties with care and attention to educational concerns. But two conflicts in his see caused him to depart and later return and he became known for being close to Pope Martin V and his successor Pope Eugene IV. Both men held Albergati in high esteem and nominated him to crucial positions within the Roman Curia and the diplomatic service to oversee important missions. He had prominent roles in the Council of Basel-Ferrara-Florence and also attended the Council of Florence.
His student Tommaso Parentucelli later became pontiff and assumed the papal name "Nicholas" in honor of his mentor and patron. His other noted student Silvio Eneo Piccolomini also became pope sometime after Parentucelli.
His beatification received confirmation from Pope Benedict XIV on 25 September 1744.