Ivaldi is a surname of Italian origin. Notable people with this surname include:
Christian Ivaldi (born 1938), French pianist
Ettore Ivaldi, Italian former slalom canoeist
Francesco Ivaldi (born 1977), Italian yacht racer who competed in the 2000 Summer Olympics
Humberto Ivaldi (1909–1947), Panamanian painter and director of the National School of Painting in Panama City
Matteo Ivaldi (born 1971) is an Italian yacht racer who competed in the 1996 and in the 2000 Summer Olympics
Michele Ivaldi (born 1970), Italian yacht racer who competed in the 1996 Summer Olympics
Mickaël Ivaldi (born 1990), French Rugby Union player
Raffaello Ivaldi (born 1997), Italian slalom canoeist
Ferdinando "Sandro" Mussa-Ivaldi, Italian born professor at Northwestern University
Serena Ivaldi Italian-born robotics researcher