Camillo Castiglioni (lived 1879 - 1957) was an Austrian banker, sometimes called a financial magician. Born in Triest, he lived in Austria. Before World War I, he was manager of the Austrian Semperit rubber company. He helped Karl Friedrich Rapp to found BMW.
Castiglioni became rich in ventures during the period of inflation, acquiring a majority interest in Alpine Montan AG. The Austrian aviation company Österreichische Luftfahrtsgesellschaft was founded by him.
Castiglioni built up a large art collection and a theatre in Vienna.
Because of his famous banking activities, his life was documented in a 1988 movie on television titled "Camillo Castiglioni oder die Moral der Haifische", directed by Peter Patzak.