Cognomen Niswonger (Niswonger 
) , globally, is quite a rare family name. The last name Niswonger is habitual in the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Niswonger | Canada, United Kingdom, United States, New Zealand, Venezuela |
| charles elliott niswonger US author (1868-1918), US (b. 1868) |
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| ilse w. niswonger American artist (b. 1900) |
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| richard niswonger researcher ORCID ID = 0000-0001-6397-2403 |
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