Last name Riola (Riola 
) , worldwide, is quite a rare surname. The surname Riola is habitual in Philippines, where it is quite a rare surname, Italy, where it is a rare surname, and Finland. In absolute terms, it is the most numerous in Philippines, the United States, and Italy. Very seldom, Riola is the forename as well as the last name.
| conradin riola Swiss writer, CH (b. 1667) |
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| enrico riola Italian politician, IT (b. 1836) |
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| riola koppel (b. 1933) |
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| jouko riola FI |
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| riola sardo |
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