NameCensus.

UK girl's name

Sionainn

Sionainn is a girl's name in the UK records.

We estimate that about 3 living people in the UK are called Sionainn. 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 2025 or 2026.

Key insights

  • • Sionainn ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #439 in 2014.
  • • About 3 living people in the UK are estimated to have Sionainn as a first name, after adjusting past birth registrations with ONS life tables.

Latest rank (E&W)

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Births in -

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Peak year

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Estimated living

3

2026

Geography

Where Sionainn is most common

The bars show the latest published local birth counts for Sionainn. They are useful for spotting where the name is showing up in real numbers, while the rank beside each bar shows how strongly it performs inside that region.

Sionainn ranks best in Northern Ireland in the latest published regional snapshot for that area, where it placed #439 in 2014.

Northern Ireland
3

Across the UK

Sionainn in Scotland and Northern Ireland

Northern Ireland (NISRA)

#439 in 2014

1 years of NISRA records, 3 total registered

Related

Names similar to Sionainn

FAQ

Sionainn: questions and answers

Where is Sionainn most common?

In the latest published local rankings, Sionainn ranks best in Northern Ireland, where it placed #439 in 2014. The regional bars on this page use birth counts, so they also reflect the size of each region.

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.