Last name Washam (Washam 
) , in the entire world, is quite a rare cognomen. The cognomen Washam is habitual in the United States, where it is a rare surname, Saudi Arabia, where it is a very rare surname, and Canada.
| VARIANT | COUNTRY |
|---|---|
| Washam | Saudi Arabia, United States, India, Canada, Venezuela |
| ben washam American animator, US (b. 1915) |
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| jo ann washam American professional golfer (1950-2019), US (b. 1950) |
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| tony washam college basketball player (1979–1980) South Florida |
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| tony washam college basketball player (1982–1983) West Virginia |
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| jeffrey b washam researcher (ORCID 0000-0002-0331-9581) |
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| peter washam researcher (ORCID 0000-0001-8861-520X) |
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