Cognomen Тань (Tan 
, Тань 
, Tan' ) , all over the world, is a prevalent last name. The last name Тань is habitual in Singapore, where it is a prevalent surname, Malaysia, where it is a widespread surname, and Bermuda (explore the name in all countries). Not in comparison with a country's population, it is commonest in China, Malaysia, and Singapore. Very seldom, Тань is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tan | China, Indonesia, Malaysia, Philippines, Singapore |
| Тань | Kyrgyzstan, Kazakhstan, Russia, Ukraine |
| Tan' | Philippines |