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In the world, Rio John (Rio John ) is a very rare masculine first name. The forename Rio John is habitual in South-eastern Asia, particularly Philippines, where it is a very rare male name.
| VARIANT | COUNTRY |
|---|---|
| Rio John | Philippines |
Piz, Dizon, Turin, Pirote, Ducusin, Estaris, Melloria, Sardiniola, and Sumagaysay