A reliable meaning for Kaysyn isn’t established in our sources yet. Rather than guess, we show what is recorded: how the name is used, how often, and the names it’s connected to.
The story
Published U.S. birth records include this spelling as early as 2016. This is the earliest published observation available here, rather than a date for the name’s origin.
From dated birth records
Kaysyn through the years
Babies since 1880
122
112 boys · 10 girls
Most popular year
2025
21 babies
2025
21
#4,799 for boys
2021–25 vs 2016–20
+35%
Rising
Boys Girls
Kaysyn in U.S. Social Security birth records, 2016–2025, per million births of each sex. Years with fewer than five births for a sex are not published and appear as zero. Use the arrow keys to step through years.
By the numbers
In 2025, this name appeared in 21 U.S. birth records for boys, ranking No. 4,799 among boys’ names. Average annual use for boys was 66.7% higher in 2021–2025 than in 2016–2020.
From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.