Modern invented name, possibly meaning son of Kay.
Kaysyn is a contemporary American invention, likely created by combining the phonetic elements of names like Kay or Case with the popular 'son' suffix. It follows the modern trend of using 'y' as a stylistic vowel replacement to create a unique visual profile.
Less common today
Kaysyn isn't in the latest US Top 1000. It last peaked at #4,850 in 2025.
US births per 5-year period, 1990–present (SSA data).
