Cognomen Lydick (Lydick 
) , throughout the world, is quite a rare surname. The surname Lydick is habitual in the United States, where it is a rare surname, New Zealand, where it is a very rare surname, and Canada. Measured by absolute frequency, it is the most numerous in the United States, Canada, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Lydick | Australia, Thailand, Spain, Canada, United States |
| lawrence tupper lydick United States federal judge, US (b. 1916) |
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| justin t. lydick researcher |
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