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Rhiannon

#1,119 in 2025Girls' name

Possibly great queen

Rhiannon has been given to 15,544 babies in the U.S. since 1974. In 2025 it ranked #1,119 of 17,293 girls’ names in use. Its peak year was 1999, with 651 recorded.

Babies named Rhiannon, 2025

1 in 15,800

Rhiannon over time, 1880–2025

GirlsBoys
020040060080018801900192019401960198020002020

Based on births in the U.S. Babies given the name each year. Hover the chart — or focus it and use the arrow keys — for any year. Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Rhiannon: meaning, origin, and history

Possibly great queen

Welsh and Middle Welsh

What Rhiannon means

Rhiannon may mean “great queen”.

Origin, language, and formation

Rhiannon is used in English and Welsh. Its origins include Welsh and Middle Welsh.

Pronunciation and spelling

In Welsh, Rhiannon is pronounced /r̥iˈanɔn/.

American usage and historical context

In the United States, 15,539 girls were recorded with the name Rhiannon between 1974 and 2025. Its highest annual count was 651 in 1999; its best national rank was #418 in 1977.

Over 5 years its rank rose, from #1,157 in 2020 to #1,119 in 2025. Over 10 years its rank rose, from #1,755 in 2015 to #1,119 in 2025.

In the United States, 5 boys were recorded with the name Rhiannon between 1982 and 1982. Its highest annual count was 5 in 1982; its best national rank was #7,139 in 1982.

Sources & methodologyReferences, data & attribution

Meaning, origin, and language notes draw on the references below.

American popularity figures use published Social Security Administration records for this exact spelling. Counts below five for a name, sex, and year are omitted.

Wiktionary material is available under CC BY-SA 4.0.

How common is Rhiannon?

Everything below is computed from the 2025 data — the most recent year available.

Among all babies, 2025
1 in 15,800
210 of 3,315,165 births
Among girls only
1 in 7,650
0.01% of girls
Rank, 2025
#1,119
of 17,293 girls’ names in use
Coin-flip room size
10,944 kids
Even odds of a second one

Where Rhiannon sits on the popularity scale

Rarest published (5 a year)#1 — Olivia (13,544)

Chance at least one other child shares the name

If the other children were drawn at random from the 2025 national name distribution. Real classrooms cluster by region and community, so treat these as a floor, not a ceiling.

Class of 20Under 1%
Class of 30Under 1%
Grade of 100Under 1%
School of 5003%

Put another way: gather 10,944 children born in 2025 and it's an even bet that one of them is another Rhiannon. In a class of 30 the chance is Under 1%.

When Rhiannons were born

Half of everyone ever recorded as Rhiannon was born before 1998 — so the typical Rhiannon is around 27 today.

Median birth year
1998
About 27 years old
Biggest decade
2000s
26.2% of all use
Born in the last 25 years
39.6%
Spread across generations
Recorded since 1950
15,539
People you could plausibly meet
Choose a decade

2000s — 26.2% of all recorded uses (4,075).

Is Rhiannon rising or falling?

Rank movement and count movement can disagree — the number of distinct names in use keeps growing, so a name holding a steady count still slides down the list. Both are shown.

Rank vs 1 year ago
+181
Places climbed
Rank vs 5 years ago
+38
Places climbed
Rank vs 10 years ago
+636
Places climbed
Births vs 10 years ago
1.75×
More babies than then
Share of its own peak
32.3%
Peak was 1999 (651)
Years since peak
26
Years
Year-to-year steadiness
Shifting
13.7% average annual change
Best rank ever
#418
1977

Spellings of Rhiannon

Rhiannon is not the most common spelling — Shannon is, with 93.1% against Rhiannon's 4.9%.

Grouped by closeness of spelling (up to two letter changes), same sex, with a floor on all-time use. It catches Sophia/Sofia and Aiden/Ayden, and misses spellings that sound alike but look different, like Sean and Shawn.

Where Rhiannon is used

Across 2016–2025, Rhiannon was most concentrated in Colorado — about 1 in 5,000 girls, against 1 in 9,927 across all states with data. It was least common in Minnesota (1 in 50,000).

220 per 100,000

Most concentrated

  1. 1Colorado1 in 5,000
  2. 2West Virginia1 in 5,000
  3. 3Ohio1 in 6,250
  4. 4Pennsylvania1 in 6,667
  5. 5Missouri1 in 7,143
  6. 6Washington1 in 7,143
  7. 7Arizona1 in 7,692
  8. 8North Carolina1 in 7,692

Shading is the share of that state's recorded girls given this name, not the raw count — otherwise the map would just show which states are biggest. Unshaded states have no published records for this period. U.S. birth records suppress state-year counts below 5; state counts therefore don't add up to the national total. Every state links to its full rankings.

Rhiannon around the world

Where Rhiannon ranks in official birth records elsewhere in the world. Rankings only — the number of births isn’t comparable between places, so it isn’t shown.

  • England & Wales
    1996–2025
    #1,407
    in 2025
  • Scotland
    1977–2023
    #482
    in 2023
  • Northern Ireland
    1997–2010
    #366
    in 2010
  • Ireland
    1985–2019
    #871
    in 2019
  • France
    2003–2003
    #5,001
    in 2003
  • Canada
    1991–2024
    #1,615
    in 2024
  • South Australia
    1971–2013
    #818
    in 2013
  • New South Wales
    1987–1999
    #92
    in 1999

Popularity data from Office for National Statistics, National Records of Scotland, Northern Ireland Statistics and Research Agency, Central Statistics Office, Institut national de la statistique et des études économiques, Statistics Canada, Consumer and Business Services (South Australia) and NSW Registry of Births, Deaths & Marriages. ONS, NRS, NISRA data under Open Government Licence v3.0. CSO, CBS SA, NSW BDM data under CC BY 4.0. INSEE data under Licence Ouverte / Etalab 2.0. StatCan data under Statistics Canada Open Licence.

Notable people named Rhiannon

People whose public names include Rhiannon, backed by Wikidata given-name records and ordered by linked Wikimedia pages. The name may be a middle name.

People data from Wikidata (CC0). Fame is measured, not judged — the order reflects how widely each person is documented, not the U.S. birth records popularity this page is otherwise about.

Rhiannon in other languages

Cross-language forms and variants of Rhiannon. Linked forms have their own page here.

RhianRhianonRhianan

Variant forms from Wikidata (CC0). Most are used mainly outside the United States; U.S. birth records statistics cover US usage only.

Rhiannon by the numbers

The raw record for each sex the name is used for.

As a girl's name

Rank in 2025
#1,119
Trend vs 5 yrs ago
Up 38
Best rank ever
#418
1977
Peak year
1999
651 that year
First recorded
1974
Last recorded
2025
All-time count
15,539
Count in 2025
210

As a boy's name

Rank in 2025
Unranked
Trend vs 5 yrs ago
—
Best rank ever
#7,139
1982
Peak year
1982
5 that year
First recorded
1982
Last recorded
1982
All-time count
5
Count in 2025
Under 5

Names similar to Rhiannon

Matched on shared beginnings and endings, similar length, and comparable popularity.

RhiannaRhianonLennonRhileyRhilynnShannonShanonRhianaRhiannanMignonVernonRheannonRhianneChannonRhianManonLashannonBriannonLynnonReannonRhileeRiannonKannonRhiann

Names with a curve like Rhiannon

Not spelling — timing. These names rose, peaked and faded in the same years as Rhiannon, so they read as being from the same moment even when they look nothing alike.

IndiaKaceyLarissaCarinaSheaAraceliAbbeyAjaJanaeCristalKaciPrecious

Sibling names for Rhiannon

Names from the same era and popularity tier — the two things that make a sibling set feel deliberate — skipping lookalike spellings and shared initials.

Explore around Rhiannon

Top names of 1999, Rhiannon's peak yearThe 1990s in fullOther names that peaked in 1977Girls' names starting with RFantasy Girl NamesWelsh Girl NamesWelsh Mythology NamesWelsh Names