UK boy's name
Theo-Jack
For 2026, the newest official UK baby-name figures on this page are from 2022. That release is the current official benchmark rather than a forecast.
Theo-Jack is a boy's name in the UK records. People looking for Theo-Jack popularity in 2026 should use the latest official release, which is 2022 in this profile. In that release it ranked #4789, with 3 babies registered with the name. Its strongest year in the published records was 2015, with 3 births.
This profile covers 6 England and Wales registrations across 2 recorded years from 2015 to 2022. 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 Theo-Jack. 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 2023 or 2026.
Key insights
- • Theo-Jack ranked #4789 for boys in England and Wales in 2022, with 3 registrations.
- • The name peaked in 2015, when 3 boys were registered as Theo-Jack.
- • About 6 living people in the UK are estimated to have Theo-Jack as a first name, after adjusting past birth registrations with ONS life tables.
Latest rank (E&W)
#4789
2022
Births in 2022
3
Latest year
Peak year
2015
3 births
Estimated living
6
2026
Popularity
Theo-Jack over time
The chart below shows babies named Theo-Jack registered in England and Wales in the years where the name appears in the published records, from 2015 to 2022. Empty years are left out so rare names are not stretched across long periods where the published files do not show any registrations.
For Theo-Jack, the clearest high point is 2015. The latest England and Wales figure is 3 births in 2022, compared with 3 at the peak.
Babies born per year
Decades
Theo-Jack by decade
Decade totals smooth out the yearly jumps and make it easier to see whether Theo-Jack 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 |
|---|---|---|---|
| 2020s | #4789 | 3 | 1 |
| 2010s | #4747 | 3 | 1 |
Related
Names similar to Theo-Jack
- Thomas 160,894
- Tyler 42,147
- Theo 40,594
- Toby 32,482
- Theodore 30,211
- Tommy 25,300
- Teddy 20,781
- Taylor 14,354
- Tobias 13,102
- Tom 9,822
- Tristan 9,171
- Timothy 6,200
FAQ
Theo-Jack: questions and answers
How popular is the name Theo-Jack in the UK right now?
In 2022, Theo-Jack was ranked #4789 for boys in England and Wales, with 3 births registered.
When was Theo-Jack most popular?
The peak year on record was 2015, with 3 babies registered as Theo-Jack in England and Wales.
How many people are called Theo-Jack in the UK?
A total of 6 babies have been registered as Theo-Jack 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.