Surname Rielo (Rielo 
) , around the world, is a rare family name. The cognomen Rielo is habitual in Argentina, where it is a rare surname, Spain, and Uruguay. Measured by absolute frequency, it most frequently occurs in Argentina, Spain, and Philippines. Much less frequently, Rielo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rielo | Brazil, Spain, United States, Philippines, Argentina |
| fernando rielo Spanish poet, ES (b. 1923) |
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pedro rielo ES (b. 1972) |
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| luis rielo |
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