Surname Oselin (Oselin 
) , around the world, is a rare last name. The cognomen Oselin is habitual in Estonia, where it is quite a rare surname, Italy, where it is a rare surname, and Honduras, where it is a very rare surname. In absolute terms, it is commonest in Italy, Estonia, and France. Also, Oselin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Oselin | Estonia, Italy, France, Democratic Republic of the Congo, China |
| kersti oselin Estonian medical researcher and pharmacologist, EE (b. 1973) |
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| martina oselin researcher (ORCID 0000-0001-6487-3837) |
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