Cognomen Harknett (Harknett 
) , throughout the world, is a rare last name. The last name Harknett is characteristic of the United Kingdom, where it is a rare surname, New Zealand, and Canada. Measured by absolute frequency, it most frequently occurs in the United Kingdom, the United States, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Harknett | Australia, New Zealand, United Kingdom, United States, Canada |
| alice phoebe harknett Titanic victim (b. 1890) |
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| terry harknett British writer, GB (b. 1936) |
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