Cristiani is a surname. Notable people with the surname include:
Alfredo Cristiani (born 1947), President of El Salvador
Gabriella Cristiani (born 1949), Italian film editor
Giovanni di Bartolomeo Cristiani, Tuscan painter
Quirino Cristiani (1896-1984), Argentine animation director
Stefano Cristiani (born 1958), Italian astronomer
Tony Cristiani, American football player