Surname 恒男 (恒男 
) , across the world, is an extremely rare family name. Much more frequently, 恒男 is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 恒男 | China |
| 片桐 恒男 Japanese actor, JP (b. 1896) |
|
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| 楠 恒男 Japanese businessman, JP (b. 1947) |
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