Surname Fonken (Fonken 
) , globally, is a rare last name. The family name Fonken is characteristic of Netherlands, where it is quite a rare surname, Peru, where it is a rare surname, and Estonia. Measured by absolute frequency, this name is the most popular in Netherlands, the United States, and Germany.
| VARIANT | COUNTRY |
|---|---|
| Fonken | Netherlands, Belgium, United States, Peru, Germany |
| gunther s. fonken (b. 1926) |
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| laura k fonken researcher |
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| david william fonken Ph.D. University of Texas at Austin 1983 |
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| yvonne fonken researcher ORCID ID = 0000-0003-4407-6966 |
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