| Meaning | curly-haired |
| Origin | Gaelic, Irish, Scottish |
| Gender | gender neutral |
| Opposite gender | Cassidy |
| Popularity | Moderate |
| Length | 7 |
| Syllables | 3 |
| Syllabification | Cas-si-dy |
Cassidy brings together warmth and strength in a name that has transcended traditional gender boundaries to become increasingly popular for boys. The name evokes images of adventure and independence, perhaps calling to mind the rugged American frontier spirit. Boys named Cassidy often carry a natural charisma, with the name's melodic quality lending itself to easy nicknames like Cass or Sid. It works beautifully across all life stages, from a playful toddler to a distinguished professional. The name's Irish heritage adds depth without demanding cultural specificity, making it adaptable for families of any background. Cassidy strikes that rare balance between being recognizable yet not oversaturated, ensuring individuality without isolation. Its three-syllable rhythm creates a musical quality that pairs well with most surnames.
| Cass |
| Sid |
| Cassie |
| Caz |
| Cassidy Freeman | American actress |
| Cassidy Hubbarth | ESPN anchor |
| Cassidy Rae | American actress |
| Cassidy Gifford | American actress |
| Cassidy Klein | American pornographic actress |
| Cassidy Pope | American singer |
| Cassidy Haley | American musician |
| Cassidy McGill | Australian rugby player |
| Cassidy McComb | Canadian ice hockey player |
| Cassidy Lichtman | American volleyball player |
| Cassidy Bargell | English footballer |
| Cassidy Coventry | New Zealand rugby player |
| Cassidy Mihalko | American roller derby skater |
| Cassidy Swanson | American wrestler |
| Cassidy Ojo | English basketball player |
| Cassidy Bayer | American swimmer |
| Cassidy Brothers | Scottish footballer |
| Cassidy Zellmer | American chef |
| Cassidy Brown | American actor |
| Cassidy Johncox | American journalist |
| Cassidy "Cass" Freeman | Character from the TV show "Smallville" |
| Cassidy Bullock | Character from the movie "The Best Man" |
| Cassidy Sharp | Character from the novel "Miles from Nowhere" |
| Cassidy "Cass" LaDue | Character from the book "Bone Gap" |
| Cassidy Spilker | Character from the movie "The Gallows" |
| Cassidy "Cass" Kavanagh | Character from the book "Black Rabbit Summer" |
| Cassidy Finch | Character from the TV show "Veronica Mars" |
| Cassidy "Cass" Ingram | Character from the book "Bitter Sweet Love" |
| Cassidy "Cass" Price | Character from the video game "Life is Strange 2" |
| Cassidy "Cass" Reilly | Character from the book series by Carol Higgins Clark |
| Cassidy "Cass" Thunderhill | Character from the comic book series "Preacher" |
| Cassidy "Cass" Foster | Character from the TV show "Scorpion" |
| Cassidy "Cass" Harte | Character from the book "Cassidy Harte and the Comeback Kid" |
| Cassidy "Cass" Nile | Character from the book "The Chatham School Affair" |
| Cassidy "Cass" Cain | Character from DC Comics |
| Cassidy "Cass" Merteuil | Character from the movie "Cruel Intentions" |
| Cassidy "Cass" Morgan | Character from the TV show "The 100" |
| Cassidy "Cass" Knight | Character from the book "After" |
| Cassidy "Cass" Whelan | Character from the book "Goodbye Days" |
| Cassidy "Cass" O'Brien | Character from the book "Cassidy's Guide to Everyday Etiquette" |