Leo or Theo

Leo is the more popular boy name in Canada, #4 to #17 in 2024. Leo is the more popular boy name in England and Wales, #3 to #12 in 2025. Leo is the more popular boy name in the USA, #24 to #80 in 2024.

Leo 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 Leo against Theo, in that place's most recent complete year.LeoTheo#1#25#50#100Canada#4 → #17 ↓13England and Wales#3 → #12 ↓9USA#24 → #80 ↓56Alberta#7 → #47 ↓40British Columbia#6 → #26 ↓20Ontario#10 → #33 ↓23Quebec#2 → #10 ↓8
PlaceYear Leo Theo Ahead
Canada2024#4#17Leo
England and Wales2025#3#12Leo
USA2024#24#80Leo
Alberta2024#7#47Leo
British Columbia2024#6#26Leo
Ontario2024#10#33Leo
Quebec2024#2#10Leo

Leo and Theo in Canada, 2020–2024

Leo climbed from #5 in 2020 to #4 in 2024 in Canada. Theo climbed from #30 in 2020 to #17 in 2024 in Canada.

Leo and Theo ranked by year in Canada, 2020 to 2024.#1#50#4 Leo#17 Theo20202021202220232024

See the full Canada boy names list for 2024 →

Leo and Theo in England and Wales, 2020–2025

Leo climbed from #6 in 2020 to #3 in 2025 in England and Wales. Theo climbed from #17 in 2020 to #12 in 2025 in England and Wales.

Leo and Theo ranked by year in England and Wales, 2020 to 2025.#1#20#3 Leo#12 Theo202020212022202320242025

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

Leo and Theo in the USA, 2020–2024

Leo climbed from #36 in 2020 to #24 in 2024 in the USA. Theo climbed from #172 in 2020 to #80 in 2024 in the USA.

Leo and Theo ranked by year in USA, 2020 to 2024.#1#125#250#24 Leo#80 Theo20202021202220232024

See the full USA boy names list for 2024 →

Other comparisons

More head-to-heads with Leo
Adam or LeoAlfie or LeoArchie or LeoArlo or LeoArthur or LeoBenjamin or LeoCharles or LeoDaniel or LeoEdouard or LeoEmile or LeoEthan or LeoFinley or LeoFreddie or LeoGeorge or LeoHarry or LeoHenry or LeoHudson or LeoJack or LeoJacob or LeoJames or LeoJude or LeoJules or LeoLaurent or LeoLeo or LeviLeo or LiamLeo or LoganLeo or LouisLeo or LucaLeo or LucasLeo or MilesLeo or MohammedLeo or MuhammadLeo or NathanLeo or NoahLeo or OliverLeo or OscarLeo or OwenLeo or RaphaelLeo or RoryLeo or TheodoreLeo or ThomasLeo or WilliamLeo or WyattLeo 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 TheoJack or TheoJacob or TheoJames or TheoJude or TheoJules or TheoLaurent 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.