Rising since 2009, #1,548 for girls today.
Popularity of Lennyn since 2001
Babies named Lennyn per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls | Boys |
|---|---|---|
| 2000s | 5 | 47 |
| 2010s | 229 | 48 |
| 2020s | 575 | 26 |
Meaning & origin
Lennyn is a modern feminine name that emerged in U.S. records in 2009, reflecting a trend of creating respellings of popular names. The name has been steadily rising, peaking at rank 1,548 in 2025, with about 1 in 11,818 girls receiving it. It has been most frequently used in South Dakota, Iowa, and Michigan. Lennyn owes its origin to the Irish surname Lennon, itself derived from Ó Leannáin. Though still relatively rare, its upward trajectory suggests growing appeal among parents seeking a fresh, melodic variation of a classic surname.
Lennyn appears to be a modern coinage, likely a respelling or feminine form of the Irish surname Lennon. The surname Lennon derives from the Irish Ó Leannáin, meaning "descendant of Leannán", where leannán can mean "lover" or "cloak". The name first appeared in U.S. records in 2009, gaining modest use as a given name for girls.
Where Lennyn is most popular
Births per 100,000 girls by state, 2025. The lightest shade means too few recorded births.
Nicknames & variants
Nicknames: Lenny, Lenni, Lyn
Sibling names for Lennyn
Names that share Lennyn's style, for a brother or sister.
