Family name Gillingwater (Gillingwater 
) , across the world, is a rare last name. The surname Gillingwater is habitual in the United Kingdom, where it is a rare surname, New Zealand, and Canada. In absolute terms, this name is the most popular in the United Kingdom, Canada, and the United States.
| VARIANT | COUNTRY |
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| Gillingwater | United Kingdom, Canada, South Africa, New Zealand, United States |
| edmund gillingwater English topographer (b. 1735) |
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claude gillingwater actor (1870-1939), US (b. 1870) |
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| richard gillingwater British businessman, GB (b. 1956) |
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| thomas h. gillingwater researcher |
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