Meaning uncertain; likely a modern variant of Kai or Kayden.
Kaiyen is a contemporary creation, likely formed by blending the popular name Kai with the rhythmic suffix -en found in names like Hayden or Jayden. While it lacks a singular ancient etymology, it draws on the diverse roots of Kai, which can mean 'sea' in Hawaiian or 'forgiveness' in Japanese.
Fewer than 5 boys were named Kaiyen in 2025.
US births per 5-year period, 1990–present (SSA data).
