Costamagna

Costamagna is an Italian surname. Notable people with the surname include:


 * Alejandra Costamagna (born 1970), Chilean writer and journalist
 * Carlo Costamagna (1881–1965), Italian lawyer and academic
 * Claudio Costamagna (born 1956), Italian banker
 * Luisella Costamagna (born 1968), Italian journalist and TV presenter