Family name Stainbrook (Stainbrook 
) , all over the world, is quite a rare cognomen. The surname Stainbrook is characteristic of the United States, where it is a rare surname, Canada, and New Zealand, where it is a very rare surname. Not in comparison with a country's population, it is commonest in the United States, Canada, and Australia.
| VARIANT | COUNTRY |
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| Stainbrook | Australia, United Kingdom, Canada, United States, New Zealand |
| tim stainbrook college basketball player (2014–2017) Xavier |
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| sarah stainbrook researcher ORCID ID = 0000-0002-0124-8230 |
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| maxie stainbrook college basketball player (1948–1948) Mississippi State |
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| phil stainbrook college basketball player (1968–1968) Penn State |
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| nancy stainbrook (died 1927) |
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| jennifer alacia trent stainbrook pediatric researcher |
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| matt stainbrook American basketball player, US (b. 1992) |
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