Cognomen Diol (Diol 
) , in all the world, is quite a rare surname. The last name Diol is characteristic of Sub-Saharan Africa, particularly Gabon, where it is quite a rare surname, Senegal, and the Democratic Republic of the Congo, where it is a rare surname. Likewise, Diol is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Diol | Senegal, Gabon, Democratic Republic of the Congo, Philippines, United States |
| susan diol American actress, US (b. 1962) |
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| sabrina jyotsna diol Ph.D. University of Rochester 1997 |
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