Jahani (Persian: جهانی) is a surname. Notable people with the surname include:
Abdul Bari Jahani, Afghan writer Milad Jahani, Iranian footballer Ghafour Jahani, Iranian football coach Khaled al-Johani, Saudi Arabian dissident Mohammed Al-Jahani, Saudi footballer Parviz Jahani, Kurdish writer Rahim Jahani, Afghan musician Sahar Jahani, American screenwriter See also Jani (surname)