Cognomen Swartout (Swartout 
) , globally, is quite a rare family name. The cognomen Swartout is characteristic of the United States, where it is a rare surname, Canada, and the United Kingdom, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Swartout | Canada, Venezuela, Philippines, United States, United Kingdom |
| c. c. swartout American politician, US (b. 1875) |
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| norman lee swartout US (b. 1879) |
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| david b. swartout Golf coach (b. 1948) |
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| robert r. swartout (b. 1946) |
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| kevin m swartout researcher |
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| william roy swartout Ph.D. Massachusetts Institute of Technology 1981 |
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| john w swartout researcher (ORCID 0000-0002-2068-4636) |
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