Constantini is an Italian surname. Notable people with the surname include:
Claudio Constantini, Peruvian pianist Dietmar Constantini (1955–2024), Austrian footballer and manager Eduardo Constantini, Argentine Lilian Constantini (1902–1982), born Liliane Chapiro-Volpert, French actress in the 1920s and 1930s Maria-Grazzia Constantini (in marriage Lacedelli, born 1943), Italian curler María Teresa Constantini, Argentine actress Shlomi Constantini, Israeli neurosurgeon Stefania Constantini, Italian curler François Xavier Constantini, French cybernetics expert
See also Constantine (disambiguation)