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Ruairi

#5,568 in 2025Boys' name

Form of Ruaidhrí

Ruairi has been given to 301 babies in the U.S. since 1988. In 2025 it ranked #5,568 of 13,926 boys’ names in use. Its peak year was 2022, with 21 recorded.

Babies named Ruairi, 2025

1 in 195,000

Ruairi over time, 1880–2025

BoysGirls
010203018801900192019401960198020002020

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 Gaps mean the name was given fewer than 5 times that year; these counts are unpublished.

Ruairi: meaning, origin, and history

Form of Ruaidhrí

Irish

What Ruairi means

Ruairi is a form of Ruaidhrí.

Origin, language, and formation

Ruairi is used in English. Its origins include Irish.

Related names and everyday forms

Related names include Ruaidhrí.

American usage and historical context

In the United States, 289 boys were recorded with the name Ruairi between 1988 and 2025. Its highest annual count was 21 in 2022; its best national rank was #4,814 in 2022.

Over 5 years its rank fell, from #4,827 in 2020 to #5,568 in 2025. Over 10 years its rank rose, from #6,240 in 2015 to #5,568 in 2025.

In the United States, 12 girls were recorded with the name Ruairi between 2021 and 2025. Its highest annual count was 6 in 2021; its best national rank was #14,591 in 2025.

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 Ruairi?

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

Among all babies, 2025
1 in 195,000
17 of 3,315,165 births
Among boys only
1 in 100,000
<0.01% of boys
Rank, 2025
#5,568
of 13,926 boys’ names in use
Coin-flip room size
135,172 kids
Even odds of a second one

Where Ruairi sits on the popularity scale

Rarest published (5 a year)#1 — Liam (20,818)

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 500Under 1%

Put another way: gather 135,172 children born in 2025 and it's an even bet that one of them is another Ruairi. In a class of 30 the chance is Under 1%.

When Ruairis were born

Half of everyone ever recorded as Ruairi was born before 2015 — so the typical Ruairi is around 10 today.

Median birth year
2015
About 10 years old
Biggest decade
2020s
34.3% of all use
Born in the last 25 years
86.5%
A modern name
Recorded since 1950
289
People you could plausibly meet
Choose a decade

2020s — 34.3% of all recorded uses (99).

Is Ruairi 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
+839
Places climbed
Rank vs 5 years ago
−741
Places dropped
Rank vs 10 years ago
+672
Places climbed
Births vs 10 years ago
1.21×
More babies than then
Share of its own peak
81.0%
Peak was 2022 (21)
Years since peak
3
Years
Year-to-year steadiness
Volatile
30.9% average annual change
Best rank ever
#4,814
2022

Spellings of Ruairi

Ruairi is not the most common spelling — Kairi is, with 41.4% against Ruairi's 21.0%.

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.

Ruairi around the world

Where Ruairi 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
    #497
    in 2025
  • Scotland
    1981–2025
    #163
    in 2025
  • Northern Ireland
    1997–2025
    #38
    in 2025
  • Ireland
    1966–2025
    #67
    in 2025
  • Canada
    2014–2021
    #2,989
    in 2021
  • South Australia
    2008–2008
    #726
    in 2008

Popularity data from Office for National Statistics, National Records of Scotland, Northern Ireland Statistics and Research Agency, Central Statistics Office, Statistics Canada and Consumer and Business Services (South Australia). ONS, NRS, NISRA data under Open Government Licence v3.0. CSO, CBS SA data under CC BY 4.0. StatCan data under Statistics Canada Open Licence.

Ruairi by the numbers

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

As a boy's name

Rank in 2025
#5,568
Trend vs 5 yrs ago
Down 741
Best rank ever
#4,814
2022
Peak year
2022
21 that year
First recorded
1988
Last recorded
2025
All-time count
289
Count in 2025
17

As a girl's name

Rank in 2025
#14,591
Trend vs 5 yrs ago
New entry
Best rank ever
#14,591
2025
Peak year
2021
6 that year
First recorded
2021
Last recorded
2025
All-time count
12
Count in 2025
6

Names similar to Ruairi

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

JasiriDamiriKhairiKamiriJamiriDemiriKairiAhmiriRuanRuariRualZamiriRemiriEmiriRamiriNamiriCamiriRuaanRuahKymiriAmiriTajiriRuarkOmiri

Sibling names for Ruairi

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 Ruairi

Top names of 2022, Ruairi's peak yearThe 2020s in fullOther names that peaked in 2022Boys' names starting with RIrish Boy Names