Cognomen Rivai (Rivai 
, Риваи, Ривай 
) , around the globe, is a common last name. The last name Rivai is habitual in South-eastern Asia, particularly Indonesia, where it is quite a rare surname, Malaysia, where it is a rare surname, and Singapore. In absolute terms, it is the most numerous in Indonesia, Malaysia, and Russia. Very seldom, Rivai is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Rivai | Malaysia, Mexico, Indonesia, India, Democratic Republic of the Congo |
| Ривай | Ukraine, Russia |
| abdul rivai Indian journalist, ID (b. 1871) |
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marie rivai Czech writer, CZ (b. 1942) |
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| rivai marlaut ID (b. 1912) |
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| mohamad rivai (b. 1914) |
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r. achmad rivai Indonesian admiral, ID |
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| rivai harahap ID (b. 1928) |
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syamsul arief rivai ID |
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| rivai ukon Indonesian politician (born 1954 in Sukabumi), ID (b. 1954) |
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| veithzal rivai ID (b. 1947) |
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| siti fardaniah rivai ID (b. 1951) |
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| saifudin aswari rivai politician, ID (b. 1963) |
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| achmad rivai ID (b. 1957) |
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| rahmat rivai Indonesian footballer, ID (b. 1977) |
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| andy rivai Indonesian political candidate, ID |
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| rivai mbaimbai Zimbabwean politician |
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