Cognomen Rian (Rian 
, 日安 
, Риан 
) , in the entire world, is a common family name. The last name Rian is characteristic of Norway, where it is quite a common surname, Indonesia, and Malaysia, where it is quite a rare surname. Measured by absolute frequency, the name is most common in Indonesia, Bangladesh, and Malaysia. More prevalently, Rian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rian | Bangladesh, Philippines, Brazil, United States, Indonesia |
| 日安 | China |
| Риан | Kazakhstan, Russia, Kyrgyzstan |
| เหรียน | Thailand |
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egil rian Norwegian physician, NO (b. 1904) |
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| gusta marie rian SE (b. 1871) |
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| ragnvald rian Norwegian Esperantist (b. 1891) |
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erlend rian Norwegian politician (1941-2020), NO (b. 1941) |
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| johan b. rian born 1906; died 1975 (b. 1906) |
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| edwin h. rian (b. 1900) |
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tómas ó rian Waterford hurler, born 1989, IE (b. 1989) |
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| øystein rian Norwegian historian, NO (b. 1945) |
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| dagfinn rian (b. 1942) |
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| jeffrey rian (b. 1948) |
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| kacem rian chess player (b. 1959) |
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| joan gelabert i rian ES (b. 1956) |
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| bruno rian Brazilian musician, BR |
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| tarik rian Ph.D. Aarhus University 2007 |
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| khalid rian Ph.D. Aarhus University 2011 |
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Melo, Saputra, Almeida, Andrade, Cardoso, Barbosa, Batista, Pereira, Permana, Pratama, Ribeiro, Nugraha, Hidayat, Freitas, Setiawan, Carvalho, Ferreira, Oliveira, Kurniawan, Rodrigues, Goncalves, Fernandes, Santana, Ardiansyah, Maulana, Martins, Syah, Cruz, Reis, Dias, Lima, Silva, Sousa, Souza, Alves, Costa, Putra, Ramos, Rocha, Gomes, Lopes, Jesus, Nunes, Santos, Soares, Araujo, Vieira, Machado, and Nascimento