Giovanni De Gennaro

Giovanni De Gennaro may refer to:
 * Giovanni de Gennaro (bishop) (died 1556), Roman Catholic prelate
 * Giovanni De Gennaro (police officer) (born 1948), chairman of the first Italian Defense Group Leonardo (formerly Finmeccanica)
 * Giovanni De Gennaro (canoeist) (born 1992), Italian slalom canoeist