Cognomen Ostrum (Ostrum 
) , throughout the world, is a rare last name. The cognomen Ostrum is characteristic of the United States, where it is a rare surname, Canada, where it is a very rare surname, and Venezuela, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ostrum | Venezuela, United States, Canada, France |
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peter ostrum American actor, singer and songwriter, US (b. 1957) |
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| brent ostrum researcher ORCID ID = 0000-0001-9214-1940 |
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