Worldwide, Ríos (Rios 
, Ríos , Риос 
) is quite a rare epicene first name. The first name Ríos is habitual in Latin America and the Caribbean, particularly Paraguay, where it is quite a rare feminine name, Panama, where it is quite a rare unisex name, and Bolivia. In absolute terms, it is the most numerous in Indonesia, the United States, and Paraguay. Much more frequently, Ríos is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Ríos, Rios | Peru, Colombia, Argentina, United States, Mexico |
| Риос | Russia, Belarus |
| ريوس | Iraq |
De Los Ríos, Rio, ריוס, and 里奥斯
Ríos is also a name for the fictitious and mythical characters: .
| gaspar gutiérrez de los ríos 1566-1606 (b. 1566) |
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pere ríos Spanish journalist, ES (b. 1962) |
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paz ríos nasarre Spanish writer and professor, ES (b. 1967) |
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román zelaya ríos CL (b. 1966) |
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| lara ríos Costa Rican writer, CR (b. 1934) |
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martín de los ríos AR |
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| martín malagón ríos Mexican politician, MX (b. 1964) |
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| martín ríos Argentinian association football player, AR (b. 1977) |
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| martín ríos Argentinian judoka, AR (b. 1978) |
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| duarte santamarina ríos Ph.D. Universidade de Santiago de Compostela 2002 |
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| plácido cruz ríos |
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| lua ríos |
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| williams ríos (b. 1993) |
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