The first name Rhiannon

In 2025, 22 girls were named Rhiannon, making it the 1,407th most popular girls’ name. It peaked in 1998, with 657 births (#83).

Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Rhiannon with other names.

In 2025, 210 girls born in the United States were named Rhiannon, the 1,119th most popular girls’ name that year. It was used most in 1999, when 651 were.

US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.

• Rhiannon Fish
  Canadian-born Australian actress, born 1991
• Rhiannon Giddens
  American musician (born 1977)
• Rhi Jeffrey
  American swimmer, Olympic gold medalist, world champion, born 1986

• Megan
• Meredith
• Winifred
• Gwen
• Kay
• Brynn
• Cerys
• Gwendolyn
• Carys
• Gladys
• Meghan
• Sian
• Enid
• Lowri
• Bronwyn
• Gwyneth

All 78 names of Welsh origin

What is the origin of the name Rhiannon?

Rhiannon comes from Welsh.

How popular is the name Rhiannon?

In 2025, 22 girls born in England and Wales were named Rhiannon, ranking 1,407th. Its peak was 1998, with 657 births.

Is Rhiannon a boy's or a girl's name?

Mostly a girl's name: 100% of the 15,544 US babies named Rhiannon since 1880 were girls.

When was Rhiannon most popular?

1999 in the United States, when 651 babies were named Rhiannon, its highest rank at 424th.