Gerardi is an Italian surname. Notable people with the surname include:
Antonio Gerardi (born 1968), Italian actor and radio presenter
Federico Gerardi (born 1987), Italian footballer
Geronimo Gerardi (1595–1648), Flemish artist active in Italy
Giulio Gerardi (1912–2001), Italian cross-country skier
Juan José Gerardi Conedera (1922–1998), Guatemalan Roman Catholic bishop
Kellie Gerardi (born 1989), American scientist and science communicator
Pietro Paolo Gerardi (1633–1708), Italian Roman Catholic prelate
Roberto Gerardi (1919–1995), Italian cinematographer
Sheyene Gerardi, Venezuelan actress, producer, and media executive