Onorato Caetani may refer to:
Onorato Caetani (died 1400), Neapolitan statesman, senator of Rome , Neapolitan statesman and art patron , Neapolitan nobleman , Italian mercenary Onorato Caetani (1742–1797), Italian scholar and art patron Onorato Caetani (1842–1917), Italian politician, president of the Italian Geographical Society