Cognomen Tiamiou (Tiamiou 
) , in the world, is a rare family name. The family name Tiamiou is habitual in Benin, where it is quite a rare surname, Ethiopia, where it is a very rare surname, and Spain. In absolute terms, it is the most numerous in Benin, Ethiopia, and France. Very seldom, Tiamiou is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tiamiou | Spain, France, Benin, Nigeria, Ethiopia |
| tiamiou adjibadé Beninese politician, BJ (b. 1937) |
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