| Meaning | vigilant, alert |
| Origin | Gaelic, Irish, Modern |
| Gender | gender neutral |
| Opposite gender | Kayce |
| Popularity | Moderate |
| Length | 5 |
| Syllables | 2 |
| Syllabification | Kay-ce |
Modern and streamlined, this name represents contemporary naming trends while maintaining genuine appeal. The unconventional spelling elevates it beyond simplicity into something more distinctive and intentional. It carries a unisex quality that reflects evolving perspectives on gender and identity, though it works beautifully for boys. There's sophistication in its brevity—saying more with less, making every letter count. Parents selecting this demonstrate appreciation for efficiency and style working in harmony. The name feels current without being trendy, suggesting longevity despite its modern construction. It's accessible yet unique, familiar yet fresh—a combination increasingly sought by discerning parents today.
| Kay |
| KC |
| Kaycee |
| Ace |
| Casey Affleck | American actor |
| Casey Stoner | Australian former motorcycle racer |
| Casey Jones | American railroad engineer and folk hero |
| Casey Neistat | American YouTuber and filmmaker |
| Kacey Musgraves | American singer-songwriter - sometimes spelled as Kayce for males |
| Kasey Keller | American former soccer player |
| Casey Martin | American professional golfer |
| Casey Mears | American former NASCAR driver |
| Kaci Kullmann Five | Norwegian politician and Nobel Peace Prize laureate |
| Casey Stengel | American baseball player and manager |
| Kacy Catanzaro | American gymnast and professional wrestler |
| Casey Hampton | American former NFL player |
| Casey Mittelstadt | American ice hockey player |
| Kacey Bellamy | American ice hockey player - sometimes spelled as Kayce for males |
| Casey Hayward | American NFL player |
| Casey FitzRandolph | American former speed skater |
| Kaci Brown | American singer-songwriter - sometimes spelled as Kayce for males |
| Casey Abrams | American musician and former American Idol contestant |
| Casey J | American gospel singer-songwriter |
| Kasey Kahne | American former NASCAR driver |
| Casey Ryback | Under Siege |
| Casey Newton | Tomorrowland |
| Casey Kelso | That '70s Show |
| Casey Connor | The Faculty |
| Casey Affleck | Ocean's Eleven - character named after the actor Casey Affleck |
| Casey Hughes | As the World Turns |
| Casey Shraeger | The Unusuals |
| Casey Novak | Law & Order - Special Victims Unit |
| Casey Chappel Davenport | Liv and Maddie |
| Casey Cartwright | Greek |
| Casey Finnegan | The Life Aquatic with Steve Zissou |
| Casey Gant | Silent Night, Deadly Night |
| Casey Braxton | Home and Away |
| Casey McDonald | Life with Derek |
| Casey Becker | Veronica Mars |
| Casey Jones | Casey Jones - 1980s animated series |