Surname Тео (Theo 
, Teo , Тео 
) , in the world, is a widespread cognomen. The cognomen Тео is characteristic of Singapore, where it is a widespread surname, Brunei, where it is a common surname, and British Virgin Islands (explore the name in all countries). Measured by absolute frequency, it is commonest in South-eastern Asia, particularly Singapore, Malaysia, and Indonesia. More frequently, Тео is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Theo, Teo | Germany, Malaysia, Indonesia, Singapore, Brazil |
| Тео | Bulgaria, Kazakhstan, Russia, Ukraine |
| Tehau | Australia, New Zealand, United States, France |