Cognomen Tjernstrom (Tjernstrom 
) , around the globe, is a rare surname. The surname Tjernstrom is habitual in Sweden, where it is a rare surname, Denmark, and Canada, where it is a very rare surname. Very seldom, Tjernstrom is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tjernstrom | Denmark, Thailand, United States, Sweden, Canada |