Constantini is an Italian surname. Notable people with the surname include:
Claudio Constantini, Peruvian pianist
Dietmar Constantini, Austrian footballer and manager
Eduardo Constantini, Argentine
Federica Constantini, Italian figure skater
Lilian Constantini (1902-1982), born Liliane Chapiro-Volpert, French actress in the 1920s and 1930s.
MarĂa Teresa Constantini, Argentine actress
Shlomi Constantini, Israeli neurosurgeon