Cognomen Honnef (Honnef 
) , throughout the world, is a rare last name. The cognomen Honnef is habitual in Germany, where it is a rare surname, Netherlands, and Australia. Not in comparison with a country's population, it most frequently occurs in Germany, Brazil, and Netherlands.
| VARIANT | COUNTRY |
|---|---|
| Honnef | Brazil, Netherlands, United States, Germany, Australia |
| hermann honnef German inventor and engineer (1878-1961), DE (b. 1878) |
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| klaus honnef German art historian, DE (b. 1939) |
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