Family name Тайер (Tajer 
, Thayer 
, Tayer ) , in the entire world, is a common cognomen. The surname Тайер is habitual in United Arab Emirates, where it is quite a common surname, Israel, where it is quite a rare surname, and the United States. Measured by absolute frequency, it is commonest in the United States, United Arab Emirates, and Morocco. Much less frequently, Тайер is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tajer | Poland, Morocco, United Arab Emirates, India, United States |
| Thayer | Philippines, Canada, Israel, India, United States |
| Tayer | Philippines, Morocco, United Arab Emirates, India, United States |
| Тайер | Ukraine, Kazakhstan, Russia |