Family name Attwater (Attwater 
) , globally, is a rare cognomen. The last name Attwater is characteristic of Australia, where it is a rare surname, the United Kingdom, and New Zealand. Not in comparison with a country's population, it is the most numerous in the United Kingdom, Australia, and the United States.
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| Attwater | United Kingdom, Spain, Australia, United States, Canada |
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donald attwater British Catholic author, editor and translator (1892-1977), GB (b. 1892) |
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| henry philemon attwater American naturalist, GB (b. 1854) |
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| thomas henry attwater British barrister, GB (b. 1857) |
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| harry lawrence attwater British urologist and surgeon (b. 1885) |
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| james attwater researcher |
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| sam attwater British actor, GB (b. 1986) |
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