Gregori or De Gregori is a surname. Notable people with the surname include:
Damien Gregori, Irish musician Daniele Gregori (born 1977), Italian football player Diego Gregori (born 1995), Spanish football player Francesco De Gregori (born 1951), Italian singer-songwriter Gianluca Gregori, physicist Girolamo Gregori (1694–1773), Italian painter Hildebrand Gregori (1894–1985), Italian Benedictine monk José Gregori (1930–2023), Brazilian lawyer and politician Luigi Gregori (1819–1896), Italian artist Paul Gregori, French paralympic athlete Rio de Gregori (1919–1987), Swiss jazz pianist Sébastien Grégori (born 1981) is a French football player