Surname Sidle (Sidle 
) , throughout the world, is a rare last name. The surname Sidle is habitual in the United States, where it is a rare surname, Canada, where it is a very rare surname, and the United Kingdom. Much less frequently, Sidle is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Sidle | Canada, United Kingdom, United States, India, Australia |
| jimmy sidle American football player (1942-1999), US (b. 1942) |
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| don sidle American basketball player, US (b. 1946) |
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| ken sidle college basketball player (1956–1958) Ohio State |
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| john e. sidle professor of medicine |
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| glenn sidle Ph.D. North Carolina State University 2017 |
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| douglas m sidle researcher (ORCID 0000-0003-2401-8777) |
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| katie c sidle researcher |
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