Cognomen Tchavdarov (Tchavdarov 
) , around the world, is a very rare family name. The cognomen Tchavdarov is habitual in Bulgaria, where it is a rare surname, Canada, where it is an extremely rare surname, and Italy. Measured by absolute frequency, it is the most numerous in Bulgaria, the United States, and Italy. Very seldom, Tchavdarov is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tchavdarov | Canada, Spain, Bulgaria, Italy, United States |