Lennyn
- Gender
- Girl
- Say it
- LEN-in
- Origin
- Irish
- US rank, 2025
- #1,548 for girls
Lennyn is a girls' name of Irish origin, meaning “lover, sweetheart”. In 2025 it ranked 1,548th for girls in the US (136 babies).
What does Lennyn mean?
Irish: spelling of Lennon, from Irish O Leannain
“lover, sweetheart”
A spelling of Lennon, an Irish surname from leannan, lover or sweetheart.
Is Lennyn a girl's or a boy's name?
Lennyn is a girls' name. In 2025, it was given to 136 girls and 6 boys in the US.
How popular is Lennyn in the US?
- Rank in 2025
- 1,548th among girls
- Babies in 2025
- 136 about 1 in 12,000 girls
- Five-year trend
- Rising fast up 142% in five years
- Same name in a class
- under 1% chance among 15 girls
In 2025, 136 girls in the US were named Lennyn, making it the 1,548th most popular name for girls. Five years earlier, in 2020, it was 2,659th. It first appears in the records in 2009. 6 boys were also named Lennyn in 2025 (10,690th for boys).
2025 had the most girls named Lennyn of any year since it first appeared, in 2009.
Half of all the girls named Lennyn in the US since 1880 were born between 2019 and 2024, the years shaded on the chart below.
In 2025, 1,563 girls in the US were given Lennyn or a name that sounds the same. With every name's spellings counted this way, that ranks #229, up from #1,548 for this spelling alone.
Lennyn in the US, year by year
| Year | Girls | Rank |
|---|---|---|
| 2025 | 136 | #1,548 |
| 2024 | 112 | #1,796 |
| 2023 | 93 | #2,076 |
| 2022 | 99 | #1,974 |
| 2021 | 72 | #2,460 |
| 2020 | 63 | #2,659 |
| 2019 | 46 | #3,387 |
| 2018 | 32 | #4,356 |
| 2017 | 42 | #3,626 |
| 2016 | 46 | #3,411 |
| 2015 | 23 | #5,651 |
| 2014 | 18 | #6,711 |
| 2013 | 7 | #13,145 |
| 2012 | 8 | #12,193 |
| 2011 | 7 | #13,339 |
| 2010 | 0 | – |
| 2009 | 5 | #17,288 |
Names like Lennyn
Names given in the same years and the same naming tradition, with a similar sound.
Teagan, Sevyn, Braelynn, Lakelynn, Brynlee, Rynlee, Londyn, Devyn, Oaklynn, Eowyn, Ailyn, Rylynn
Other spellings of Lennyn
Names related to Lennyn
More Irish names
Oscar, Rowan, Rory, Maeve, Finn, Aiden, Ryan, Nolan, Quinn, Orla, Cody, Erin, Ronan, Connor, Declan, Casey
Sources
Figures from Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Lennyn: name meaning, origin and popularity”, https://www.nameling.co.uk/names/lennyn, updated 20 October 2026.