NameCensus.

UK girl's name

Rhiannah

A feminine name of uncertain origin, possibly from a Welsh surname.

For 2026, the newest official UK baby-name figures on this page are from 2008. That release is the current official benchmark rather than a forecast.

Rhiannah is a girl's name in the UK records. People looking for Rhiannah popularity in 2026 should use the latest official release, which is 2008 in this profile. In that release it ranked #5545, with 3 babies registered with the name. Its strongest year in the published records was 1997, with 6 births.

This profile covers 44 England and Wales registrations across 10 recorded years from 1996 to 2008. The figures come from ONS England and Wales, so the page is a view of published baby-name registrations rather than a forecast or a live count of people using the name today.

The latest count is about 50% of the recorded peak, which gives a quick read on how the name has moved since its high point.

We estimate that about 44 living people in the UK are called Rhiannah. This uses published birth registrations from England and Wales, Scotland and Northern Ireland, then applies ONS national life tables to estimate how many are likely still alive. It does not forecast extra births for 2009 or 2026.

Key insights

  • Rhiannah ranked #5545 for girls in England and Wales in 2008, with 3 registrations.
  • The name peaked in 1997, when 6 girls were registered as Rhiannah.
  • About 44 living people in the UK are estimated to have Rhiannah as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

#5545

2008

Births in 2008

3

Latest year

Peak year

1997

6 births

Estimated living

44

2026

Meaning

What does Rhiannah mean?

The name Rhiannah is a variant spelling of the Welsh name Rhiannon, which has its origins in the Celtic mythology of the Britons, a people who inhabited the island of Great Britain prior to the Anglo-Saxon invasion. The name is believed to derive from the Welsh word "rhian," meaning "great queen" or "divine queen."

The earliest known reference to the name Rhiannon can be found in the Mabinogion, a collection of medieval Welsh tales dating back to the 11th century. In these tales, Rhiannon is depicted as a powerful and enigmatic figure associated with horses and fertility. She is portrayed as the daughter of the mythical figure Hwyfar and is married to Pwyll, the prince of Dyfed.

One of the earliest recorded individuals with the name Rhiannon was Rhiannon Frampton, a British actress born in 1976. She is best known for her role as Cassie Tyler in the long-running BBC medical drama "Casualty." Another notable figure was Rhiannon Giddens, an American singer-songwriter born in 1977, who is the co-founder of the Grammy-winning folk band Carolina Chocolate Drops.

In the literary world, Rhiannon was the pen name of British author Rhiannon Lassiter (1951-2022), who wrote several novels, including the popular "Hex" series of fantasy books for young adults. Rhiannon Batten (1912-1997), an Australian artist and sculptor known for her modernist works, was another prominent figure who bore this name.

Historically, the name Rhiannon has been associated with strong, independent women. One notable example is Rhiannon Ifans (1941-2007), a Welsh lawyer and activist who played a significant role in the struggle for Welsh language rights and was awarded an OBE for her contributions.

While the name Rhiannon has its roots in Welsh mythology, its variant spelling, Rhiannah, has gained popularity in recent times, particularly in English-speaking countries. This name evokes a sense of strength, mystique, and connection to ancient Celtic traditions.

Sourced from namecensus.com.

Popularity

Rhiannah over time

The chart below shows babies named Rhiannah registered in England and Wales in the years where the name appears in the published records, from 1996 to 2008. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.

For Rhiannah, the clearest high point is 1997. The latest England and Wales figure is 3 births in 2008, compared with 6 at the peak.

Babies born per year

Rhiannah
02356199620022008

Decades

Rhiannah by decade

Decade totals smooth out the yearly jumps and make it easier to see whether Rhiannah was a short-lived spike or a name that stayed in regular use. Average rank is calculated only from years where a published rank exists.

Decade Average rank Total births Years covered
2000s #4076 28 7
1990s #2648 16 3

Related

Names similar to Rhiannah

FAQ

Rhiannah: questions and answers

How popular is the name Rhiannah in the UK right now?

In 2008, Rhiannah was ranked #5545 for girls in England and Wales, with 3 births registered.

When was Rhiannah most popular?

The peak year on record was 1997, with 6 babies registered as Rhiannah in England and Wales.

What is the meaning and origin of Rhiannah?

A feminine name of uncertain origin, possibly from a Welsh surname.

How many people are called Rhiannah in the UK?

A total of 44 babies have been registered as Rhiannah across the 10 years of ONS England & Wales records shown here.

Which records is this page based on?

The England and Wales timeline uses ONS baby-name records. Scotland figures come from NRS and Northern Ireland figures come from NISRA. Counts are registrations in published baby-name files. The living estimate uses those birth registrations with ONS national life tables.