Cognomen Hardenbrook (Hardenbrook 
) , all over the world, is a rare last name. The cognomen Hardenbrook 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 |
|---|---|
| Hardenbrook | Canada, Brazil, New Zealand, Chile, United States |
| margaret hardenbrook philipse New Netherland businesswoman, NL (b. 1637) |
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| david hardenbrook (b. 1967) |
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| nathan j hardenbrook researcher |
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