Kayden is a modern American spelling of Caden, which is usually traced to the Irish surname Mac Cadáin, "son of Cadán", though for most parents it is simply a fresh name that rhymes with Aiden and Jayden. In the United States Kayden jumped from number 782 in 2000 into the top 100 in 2012, peaked at number 90 in 2014 and ranks 135th among boys in 2025.