Lassie
Girl name · Celtic Gaelic · Irish · Scottish
- US rank
- Unranked
- Syllables
- 2
- Peak
- #727 in 1891
0 babies were named Lassie in the US in 2025.
Found on lists
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US births per million girls, 1883–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Lassie you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryLassie first shows up in US birth records in 1883, the first year at least 5 babies got it. It has been in use for 142 years since.
- Best yearIts best year was 1891, when it reached #727.
About the name Lassie
Lassie is a girl name of Celtic Gaelic, Irish and Scottish origin. It has 6 letters and 2 syllables, starting with L and ending in “-sie”. US birth records list Lassie for girls from 1883 to 1963, in 71 of those 81 years. Its best year was 1891, when it ranked #727 among girl names. It hasn't been given to 5 or more US babies in a year since 1963, so today it's a genuinely rare choice.
Origin:Celtic Gaelic namesIrish namesScottish names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1880s | 28 | 36,008 girls |
| 1890s | 47 | 21,268 girls |
| 1900s | 43 | 23,127 girls |
| 1910s | 32 | 31,260 girls |
| 1920s | 19 | 52,383 girls |
| 1930s | 11 | 87,796 girls |
| 1940s | 5.9 | 169,205 girls |
| 1950s | 1.7 | 574,713 girls |
| 1960s | 1.3 | 784,314 girls |
More Celtic Gaelic girl names
- Girl name: Hazel · hazel tree
- Girl name: Genevieve · possibly woman of the people
- Girl name: Brianna · possibly noble, strong
- Girl name: Maisie · pearl
- Girl name: Bonnie · pretty
- Girl name: Cecelia · blind
- Girl name: Makenna · son of Kenneth
- Girl name: Katie · pure
Questions about the name Lassie
What is the origin of the name Lassie?
Lassie has Celtic Gaelic, Irish, Scottish roots in our records. Other Celtic Gaelic names include Hazel, Genevieve, Brianna.
Is Lassie a boy or girl name?
Lassie is a girl name.
How popular is the name Lassie?
Lassie is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 1963. It peaked at #727 in 1891.