Cognomen Silkworth (Silkworth 
) , in the world, is a rare last name. The cognomen Silkworth is characteristic of Northern America, particularly the United States, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Silkworth | United States |
| william duncan silkworth American doctor, US (b. 1873) |
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| william silkworth sport shooter, US (b. 1884) |
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| whitney silkworth researcher (ORCID 0000-0002-7897-4652) |
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| william s. silkworth US |
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Sue, Gary, Gina, Leta, Lisa, Lynn, June, Judy, Nick, Nora, Dawn, Evan, Wade, Will, Megan, Sarah, Shane, Shawn, Susan, Steve, Stacy, Irma, Scott, Ryan, Pete, Kay, Dan, Lea, Lia, Jay, Jon, Jim, Tom, Mary, Rick, Mark, Sara, Sean, Anna, Amey, Adam, Beth, Bill, Keri, Kyle, Mike, and Alice