Likely a modern invented name or variant of Cason
Kaysin is a contemporary American creation, likely formed by blending the popular 'Kay' prefix with the 'sin' or 'son' suffix. It is often considered a phonetic variant of Cason or Kasen, which can trace roots to the English surname meaning 'son of Case' or the Greek name Jason.
About 24 boys were named Kaysin in 2025.
US births per 5-year period, 1990–present (SSA data).
