Last name Plankenhorn (Plankenhorn 
) , around the world, is a rare surname. The family name Plankenhorn is characteristic of Switzerland, where it is a rare surname, Germany, and Denmark. Not in comparison with a country's population, it is commonest in Germany, the United States, and Switzerland.
| VARIANT | COUNTRY |
|---|---|
| Plankenhorn | Germany, Switzerland, United States, Argentina, Denmark |
| axel plankenhorn German racing driver, DE (b. 1951) |
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| john plankenhorn American canoeist, US (b. 1954) |
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