Family name Cosner (Cosner 
) , worldwide, is quite a rare last name. The last name Cosner is characteristic of the United States, where it is a rare surname, Italy, and Israel. Not in comparison with a country's population, it most frequently occurs in the United States, Italy, and France.
| VARIANT | COUNTRY |
|---|---|
| Cosner | Italy, France, Indonesia, United States, Germany |
| ron cosner (b. 1940) |
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| raymond robert cosner Ph.D. California Institute of Technology 1975 |
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| zoe cosner researcher |
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| chris cosner researcher |
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| bob cosner college basketball player (1962–1962) Delaware |
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