Surname Theak (Theak 
) , all around the world, is a very rare family name. The cognomen Theak is habitual in Italy, where it is a very rare surname, Malaysia, where it is an extremely rare surname, and France. Also, Theak is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Theak | Vietnam, India, France, Italy, Malaysia |
| william theak Royal Air Force pilot and senior officer, GB (b. 1898) |
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| henry theak cricketer (1909-1979), AU (b. 1909) |
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