Liam or Sebastian
Liam is the more popular boy name in Canada, #2 to #79 in 2024. Sebastian is the more popular boy name in England and Wales, #47 to #68 in 2025. Liam is the more popular boy name in the USA, #1 to #14 in 2024. The two countries disagree on which is ahead.
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.
| Place | Year | Liam | Sebastian | Ahead |
|---|---|---|---|---|
| Canada | 2024 | #2 | #79 | Liam |
| England and Wales | 2025 | #68 | #47 | Sebastian |
| USA | 2024 | #1 | #14 | Liam |
| Alberta | 2024 | #3 | #86 | Liam |
| British Columbia | 2024 | #2 | #71 | Liam |
| Ontario | 2024 | #2 | #61 | Liam |
| Quebec | 2024 | #3 | #231 | Liam |
Liam and Sebastian in Canada, 2020–2024
Liam slipped from #1 in 2020 to #2 in 2024 in Canada. Sebastian climbed from #80 in 2020 to #79 in 2024 in Canada.
Liam and Sebastian in England and Wales, 2020–2025
Liam climbed from #79 in 2020 to #68 in 2025 in England and Wales. Sebastian slipped from #39 in 2020 to #47 in 2025 in England and Wales.
Liam and Sebastian in the USA, 2020–2024
Liam held #1 every year from 2020 to 2024 in the USA. Sebastian climbed from #19 in 2020 to #14 in 2024 in the USA.
Other comparisons
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.