UK boy's name
Dai
A masculine Japanese name meaning "great" or "generation".
For 2026, the newest official UK baby-name figures on this page are from 2012. That release is the current official benchmark rather than a forecast.
Dai is a boy's name in the UK records. People looking for Dai popularity in 2026 should use the latest official release, which is 2012 in this profile. In that release it ranked #4805, with 3 babies registered with the name. Its strongest year in the published records was 2011, with 3 births.
This profile covers 6 England and Wales registrations across 2 recorded years from 2011 to 2012. 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 100% of the recorded peak, which gives a quick read on how the name has moved since its high point.
We estimate that about 6 living people in the UK are called Dai. 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 2013 or 2026.
Key insights
- • Dai ranked #4805 for boys in England and Wales in 2012, with 3 registrations.
- • The name peaked in 2011, when 3 boys were registered as Dai.
- • About 6 living people in the UK are estimated to have Dai as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4805
2012
Births in 2012
3
Latest year
Peak year
2011
3 births
Estimated living
6
2026
Meaning
What does Dai mean?
The name Dai has its origins in the Welsh language, with roots dating back to ancient Celtic times. It is derived from the Welsh word "dai," which means "to shine" or "radiant." This name is thought to have been used as early as the 5th century AD in Wales and other parts of the British Isles.
One of the earliest recorded instances of the name Dai can be found in the Welsh Triads, a collection of traditional Welsh folklore and history from the Middle Ages. The Triads mention a legendary figure named Dai Ddu, meaning "Dai the Black," who was said to be a powerful warrior and protector of the ancient Britons.
In the 12th century, the name Dai gained prominence with the birth of Dai ap Gruffydd, a Welsh prince and military leader who fought against the Norman invaders of Wales. He is remembered for his bravery and his efforts to preserve Welsh independence.
During the Renaissance period, the name Dai was borne by several notable figures in Welsh literature and culture. One of the most famous was Dai Siôn Siencyn (c. 1450-1515), a renowned Welsh poet and bard who composed many works celebrating the Welsh language and traditions.
In the 19th century, the name Dai became closely associated with the Welsh working class and industrial communities. Dai Smith (1846-1920) was a prominent Welsh trade unionist and socialist who fought for workers' rights and better living conditions in the coal mining regions of South Wales.
Another historically significant figure with the name Dai was Dai Greatcoat (1899-1967), a Welsh soldier who served in World War I and became renowned for his acts of bravery on the battlefield. He was awarded the Military Medal for his courage and leadership.
While the name Dai has its roots in Welsh culture, it has also been adopted and used in other parts of the world, particularly in regions with strong Celtic or British influences. However, its historical significance and cultural connections remain deeply rooted in the traditions and history of Wales.
Sourced from namecensus.com.
Popularity
Dai over time
The chart below shows babies named Dai registered in England and Wales in the years where the name appears in the published records, from 2011 to 2012. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Dai, the clearest high point is 2011. The latest England and Wales figure is 3 births in 2012, compared with 3 at the peak.
Babies born per year
Decades
Dai by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Dai 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 |
|---|---|---|---|
| 2010s | #4726 | 6 | 2 |
Related
Names similar to Dai
- Daniel 120,900
- Dylan 60,836
- David 37,852
- Dominic 20,480
- Declan 11,657
- Dexter 11,627
- Danny 8,434
- Dean 5,329
- Dillon 4,113
- Douglas 3,773
- Dominik 3,494
- Damian 3,486
FAQ
Dai: questions and answers
How popular is the name Dai in the UK right now?
In 2012, Dai was ranked #4805 for boys in England and Wales, with 3 births registered.
When was Dai most popular?
The peak year on record was 2011, with 3 babies registered as Dai in England and Wales.
What is the meaning and origin of Dai?
A masculine Japanese name meaning "great" or "generation".
How many people are called Dai in the UK?
A total of 6 babies have been registered as Dai across the 2 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.