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, Indonesia, Malaysia, Singapore, Brazil |
| Тео | Kazakhstan, Russia, Ukraine, Bulgaria |
| Tehau | New Zealand, France, United States, Australia |