Last name Tether (Tether 
) , throughout the world, is a rare surname. The last name Tether is habitual in the United Kingdom, where it is a rare surname, New Zealand, and Ireland. Measured by absolute frequency, it is the most numerous in the United Kingdom, the United States, and Australia. Much less frequently, Tether is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Tether | Australia, Canada, New Zealand, United Kingdom, United States |
| anthony tether DARPA director (b. 1942) |
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| stephen andrew tether particle physicist at MIT |
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| anthony john tether Ph.D. Stanford University 1969 |
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| f. tether American politician – Minnesota -House 1881-82 (District 16), US |
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