Throughout the world, Reiny (Reiny 
) is quite a rare epicene first name. The given name Reiny is characteristic of the Dominican Republic, where it is quite a rare unisex name, the Democratic Republic of the Congo, where it is a rare male name, and Indonesia, where it is a rare female name. Much less frequently, Reiny is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Reiny | Brazil, Democratic Republic of the Congo, Indonesia, Venezuela, Dominican Republic |
| reiny roland German composer, DE (b. 1898) |
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| reiny landkroon Dutch singer, NL (b. 1965) |
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| reiny losanty Indonesian politician (born 1976 in Jambi), ID (b. 1976) |
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| reiny tauck college basketball player (1953–1954) Murray State |
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| reiny w a scheper researcher |
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Gil, Cheung, Bastos, Geller, Junior, Franco, Chandra, Pereira, Ramirez, Rosario, Ribeiro, Gardner, Jimenez, Agustina, Gonzalez, Nogueira, Ferreira, Oliveira, Rodriguez, Rodrigues, Goncalves, Hernandez, Swarts, Soares, Santos, Miller, Melo, Sosa, Smit, Cruz, Reis, Gama, Leme, Lima, Jong, Toit, Fernandes, Marte, Souza, Smith, Alves, Brito, Peña, Pinto, Putri, Reyes, Gomez, Lopes, Silva, and Nascimento