Jack or Theo

Jack is the more popular boy name in Canada, #11 to #17 in 2024. Theo is the more popular boy name in England and Wales, #12 to #24 in 2025. Jack is the more popular boy name in the USA, #15 to #80 in 2024. The two countries disagree on which is ahead.

Jack on its own page Theo on its own page

Place by place

Each place ranks its own registered births, so the two names are compared inside one list at a time, in that place's most recent complete year.

Where each place ranks Jack against Theo, in that place's most recent complete year.JackTheo#1#25#50#100Canada#11 → #17 ↓6England and Wales#24 → #12 ↑12USA#15 → #80 ↓65Alberta#9 → #47 ↓38British Columbia#9 → #26 ↓17Ontario#5 → #33 ↓28Quebec#72 → #10 ↑62
PlaceYear Jack Theo Ahead
Canada2024#11#17Jack
England and Wales2025#24#12Theo
USA2024#15#80Jack
Alberta2024#9#47Jack
British Columbia2024#9#26Jack
Ontario2024#5#33Jack
Quebec2024#72#10Theo

Jack and Theo in Canada, 2020–2024

Jack climbed from #14 in 2020 to #11 in 2024 in Canada. Theo climbed from #30 in 2020 to #17 in 2024 in Canada.

Jack and Theo ranked by year in Canada, 2020 to 2024.#1#50#11 Jack#17 Theo20202021202220232024

See the full Canada boy names list for 2024 →

Jack and Theo in England and Wales, 2020–2025

Jack slipped from #10 in 2020 to #24 in 2025 in England and Wales. Theo climbed from #17 in 2020 to #12 in 2025 in England and Wales. Theo passed Jack in 2022.

Jack and Theo ranked by year in England and Wales, 2020 to 2025.#1#50#12 Theo#24 Jack202020212022202320242025

See the full England and Wales boy names list for 2025 →

Jack and Theo in the USA, 2020–2024

Jack climbed from #21 in 2020 to #15 in 2024 in the USA. Theo climbed from #172 in 2020 to #80 in 2024 in the USA.

Jack and Theo ranked by year in USA, 2020 to 2024.#1#125#250#15 Jack#80 Theo20202021202220232024

See the full USA boy names list for 2024 →

Other comparisons

More head-to-heads with Jack
Adam or JackArthur or JackAsher or JackBenjamin or JackDaniel or JackElijah or JackEthan or JackEzra or JackHenry or JackHudson or JackJack or JacobJack or JamesJack or LeoJack or LeviJack or LiamJack or LoganJack or LucaJack or LucasJack or MateoJack or MichaelJack or MilesJack or MuhammadJack or NathanJack or NoahJack or OliverJack or OwenJack or SamuelJack or SebastianJack or TheodoreJack or ThomasJack or WilliamJack or WyattJack or Zorawar
More head-to-heads with Theo
Adam or TheoAlfie or TheoArchie or TheoArlo or TheoArthur or TheoBenjamin or TheoCharles or TheoEdouard or TheoEmile or TheoEthan or TheoFinley or TheoFreddie or TheoGeorge or TheoHarry or TheoHenry or TheoJacob or TheoJames or TheoJude or TheoJules or TheoLaurent or TheoLeo or TheoLevi or TheoLiam or TheoLogan or TheoLouis or TheoLuca or TheoLucas or TheoMohammed or TheoMuhammad or TheoNathan or TheoNoah or TheoOliver or TheoOscar or TheoRaphael or TheoRory or TheoTheo or TheodoreTheo or ThomasTheo or William

How this comparison is built

Both names are ranked by how many babies were registered with that exact spelling, so every position here counts real births rather than votes or searches. Rank is the only measure every source publishes, so it is what the charts plot; birth counts are not released for every place.

A place appears only in the years it published a complete list, which is why a name can be missing from a year it was almost certainly given to some babies. See every head-to-head on the site, or the ranked lists these names come from.