The name Liam is a girl's name meaning "resolute protection".

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A tiny percentage -- a tenth of one percent -- of babies named Liam in the US are girls. But Liam has been so popular for baby boys for so long, not only in the US but around the western world, that it's hard to imagine it truly becoming a unisex name.

Still, there are an increasing number of little girls named Noah and James every year, so as Liam's popularity for boys starts to fade, it may drift over to the female side.

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Liam

The name Liam peaked for girls at #3960 in 2017. Liam is also used for boys, ranking #1 in 2025.

The name Liam is a boy's name of Irish origin meaning "resolute protection".

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Liam is the top boys' name in the US, holding the Number One spot for the past eight years and also ranking as one of the most popular boys' names around the western world.
 Liam originated as a short form of Uilliam, the Irish variation of William. William is an English name from Germanic roots that was brought to Ireland when the British fled England following the Norman Conquest. The Irish began using English names, including William, which led to the development of Uilliam and its short form, Liam.
 Internationally, Liam is enjoying great popularity not only in the U.S. and its native Ireland, but in countries as diverse as Italy and Israel, Chile and Croatia. If you're looking for a boys' name that will easily translate across many languages and cultures, you can't do better than Liam.
 Irish-born actor Liam Neeson was instrumental in driving Liam up the charts, as was former Oasis member Liam (born William) Gallagher, and, more recently, One Direction member Liam Payne. Celebrities who have chosen Liam for their sons include Tori Spelling, Calista Flockhart, Rod Stewart, Kevin Costner and Craig Ferguson.
 Jaunty and richly textured, Liam holds solidly to the title of most popular boys' name starting with the letter L.

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The name Liam is currently ranked #1 in U.S. births. and peaked for boys at #1 in 2025. The name is most popular in LIAM, LIAM, and LIAM. Liam is occasionally used for girls in 2025.

Uilliam

Year	US rank	Births	Per million
2014	#4,512	32	17.9
2015	—	0	0
2016	—	0	0
2017	#3,960	38	22
2018	—	0	0
2019	#4,611	30	17.9
2020	#4,229	33	20.4
2021	#4,566	30	18.3
2022	—	0	0
2023	#4,615	30	18.7
2024	#4,239	34	21
2025	#4,829	28	17.4

Liam

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