Around the world, וסטרמרק (וסטרמרק 
, Westermarck 
) is an extremely rare unknown gender given name. Much more frequently, וסטרמרק is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| וסטרמרק | Israel |
| Westermarck | Denmark, Estonia, Finland, United States |