Janus
- US rank
- Unranked
- Syllables
- 2
- Peak
- #2,929 in 1956
0 babies were named Janus in the US in 2025.
Found on lists
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US births per million girls, 1936–2025
US births per million boys, 1922–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Janus you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryJanus first shows up in US birth records in 1922, the first year at least 5 babies got it. It has been in use for 103 years since.
- Best yearIts best year was 1956, when it reached #2,929.
About the name Janus
Janus is a gender-neutral name of Latin origin. It has 5 letters and 2 syllables, starting with J and ending in “-nus”. US birth records list Janus for girls from 1936 to 1971, in 17 of those 36 years. Its best year was 1956, when it ranked #2,929 among girl names. It hasn't been given to 5 or more US babies in a year since 1971, so today it's a genuinely rare choice.
Origin:Latin names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1930s | 1.2 | 833,333 girls |
| 1940s | 2.8 | 355,872 girls |
| 1950s | 3.0 | 336,700 girls |
| 1960s | 0.8 | 1,234,568 girls |
| 1970s | 2.1 | 476,190 girls |
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1920s | 0.6 | 1,739,130 boys |
| 1970s | 0.3 | 3,225,806 boys |
| 1990s | 0.3 | 3,125,000 boys |
| 2000s | 0.5 | 1,960,784 boys |
| 2010s | 0.8 | 1,234,568 boys |
More Latin names
- Girl name: Olivia · olive tree
- Boy name: Oliver · olive tree
- Girl name: Amelia · work, industrious
- Boy name: Theodore · gift of God
- Girl name: Mia · possibly beloved
- Girl name: Evelyn · possibly desired
- Boy name: Lucas · man from Lucania
- Girl name: Ava · possibly bird, or life
Questions about the name Janus
What is the origin of the name Janus?
Janus has Latin roots in our records. Other Latin names include Olivia, Oliver, Amelia.
Is Janus a boy or girl name?
Both. Janus is used for boys and girls.
How popular is the name Janus?
Janus is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 1971. It peaked at #2,929 in 1956.