Cognomen Knoef (Knoef 
) , throughout the world, is a rare family name. The surname Knoef is characteristic of Netherlands, where it is quite a rare surname, New Zealand, where it is a rare surname, and Belgium. Measured by absolute frequency, it is the most numerous in Netherlands, Germany, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Knoef | Netherlands, New Zealand, United States, Belgium, Germany |
| jan knoef NL (b. 1896) |
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marike knoef university teacher at Leiden University, NL (b. 1983) |
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| koos knoef Dutch association football player, NL (b. 1946) |
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| geert knoef animator (fl. in the 1950s) |
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