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Last name Riyo (Riyo
, ريو
, 両
) , worldwide, is quite a rare cognomen. The surname Riyo is characteristic of Sudan, where it is quite a rare surname, Qatar, where it is a rare surname, and Indonesia. Not in comparison with a country's population, it is the most numerous in Indonesia, China, and Sudan. More prevalently, Riyo is the forename as well as the last name.
Rio, Maulana, Sandjaja, Sanjaya, Saputra, Kishida, Pratama, Prabowo, Rafiqsyah, Nugroho, Hananto, Handoko, Febrian, Wahyudi, Setiawan, Prasetyo, Novidias, Hermawan, Syahputra, Kurniawan, Takahashi, Yoshikawa, Uehara, Hardiyanto, Yamada, Evendi, Oue, Mori, Sato, Devi, Nara, Hadi, Yono, Moore, Saito, Brown, Parti, Putra, Rajan, Nanda, Ishii, Ohara, Mathew, Sasaki, Suzuki, Thomas, Niardo, Irawan, and Wijiyantoro