Last name Hersam (Hersam 
) , in all the world, is a rare cognomen. The surname Hersam is characteristic of Germany, where it is a rare surname, Nicaragua, where it is a very rare surname, and Indonesia. Measured by absolute frequency, it is the most numerous in Germany, Indonesia, and the United States. Very seldom, Hersam is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Hersam | Germany, Indonesia, Philippines, United States, India |
| joseph hersam (b. 1890) |
|
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| mark hersam American materials scientist, US (b. 1975) |
|