Surname Тай (Taj 
, Tai , Tay , among others...) , worldwide, is a widespread last name. The surname Тай is characteristic of Singapore, where it is a widespread surname, Macao, where it is a common surname, and Hong Kong (explore the name in all countries). In absolute terms, the name is most common in China, Myanmar, and Malaysia. Likewise, Тай is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tay, Tai, Ty, Taj | Malaysia, China, India, Pakistan, Myanmar |
| Tye | Malaysia, China, India, Singapore, Myanmar |
| Tighe | Malaysia, China, India, United States, Saudi Arabia |
| Тай | Ukraine, Russia, Kyrgyzstan, Kazakhstan |