Cognomen Mikkelsaar (Mikkelsaar 
) , all around the world, is a very rare last name. The surname Mikkelsaar is characteristic of Estonia, where it is quite a rare surname, Canada, where it is a very rare surname, and Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mikkelsaar | Brazil, Canada, United States, Estonia |
|
friedrich volrad mikkelsaar Estonian educator and politician, EE (b. 1886) |
|
| hilda mikkelsaar Estonian artist, EE (b. 1906) |
|