All over the world, Tadeos (Tadeos 
, Тадеос 
) is a very rare boy's first name. The first name Tadeos is habitual in South-eastern Asia, particularly Philippines, where it is an extremely rare male name. More frequently, Tadeos is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Tadeos | Ethiopia, Philippines, Mexico, Switzerland, United States |
| Тадеос | Armenia, Ukraine |