Rheannon
- US rank
- Unranked
- Syllables
- 2
- Peak
- #3,486 in 1977
0 babies were named Rheannon in the US in 2025.
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US births per million girls, 1976–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Rheannon you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryRheannon first shows up in US birth records in 1976, the first year at least 5 babies got it. It has been in use for 49 years since.
- Best yearIts best year was 1977, when it reached #3,486.
About the name Rheannon
Rheannon is a girl name of Welsh origin. It has 8 letters and 2 syllables, starting with R and ending in “-non”. US birth records list Rheannon for girls from 1976 to 2008, in 33 of those 33 years. Its best year was 1977, when it ranked #3,486 among girl names. It hasn't been given to 5 or more US babies in a year since 2008, so today it's a genuinely rare choice.
Origin:Welsh names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1970s | 9.2 | 108,696 girls |
| 1980s | 8.8 | 113,507 girls |
| 1990s | 7.1 | 141,643 girls |
| 2000s | 6.4 | 157,343 girls |
Other spellings of Rheannon
More Welsh girl names
- Girl name: Cecilia · blind
- Unisex name: Reese · ardor, enthusiasm
- Girl name: Arianna · most holy
- Unisex name: Rowan · little red-haired one
- Unisex name: Morgan · possibly sea circle
- Girl name: Sabrina · River Severn
- Unisex name: Teagan · possibly poet
- Girl name: Gwendolyn · white ring
Questions about the name Rheannon
What is the origin of the name Rheannon?
Rheannon has Welsh roots in our records. Other Welsh names include Cecilia, Reese, Arianna.
Is Rheannon a boy or girl name?
Rheannon is a girl name.
How popular is the name Rheannon?
Rheannon is rare: fewer than 5 US girls got it in 2025, and it was last given to 5 or more in 2008. It peaked at #3,486 in 1977.