Worldwide, Цаер (Caer 
, Tsayer 
, Tsaer 
) is a very rare dominantly masculine, but seldom female first name. More prevalently, Цаер is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Caer | Belgium, Malaysia, Philippines, United States, France |
| Tsayer | United States, Israel, Malaysia |
| Tsaer | Russia, Georgia |
| Цаер | Kazakhstan, Russia |