Worldwide, Cassidi (Cassidi 
) is a rare dominantly female, but uncommonly masculine given name. The forename Cassidi is characteristic of Northern America, particularly the United States, where it is a very rare predominantly female, but very infrequently male name. Much less frequently, Cassidi is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Cassidi | United Kingdom, Brazil, Spain, Indonesia, United States |
| oonagh teresa cassidi (born 1926) (b. 1926) |
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| melian geraldine cassidi (born 1959) (b. 1959) |
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| cassidi d kalejta researcher (ORCID 0000-0001-8828-2636) |
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| cassidi hoag Canadian actress, CA (b. 1999) |
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May, Durant, Gibson, Taylor, Thomas, Howell, Wilson, Mccarty, Stabile, Carroll, Collins, Beracochea, Roberts, Haskell, Hunkler, Anderson, Townsend, Williams, Westrate, Schneider, Beckstein, Patterson, Porter, Parker, Bemrose, Carter, Dunn, Long, Hill, Wood, Smith, Allen, Casey, Knuth, Perot, Pease, Henderson, Pyles, Green, Lewis, Lynch, Jones, Olson, Young, Martin, Murray, Mccann, Amster, Davis, and Linnenkugel