What Does the Name Liam Mean?
Liam is a boy's name of Irish (Germanic root) origin meaning “resolute protection.”
Updated June 2026
| Name | Liam |
|---|---|
| Gender | male |
| Origin | Irish (Germanic root) |
| Meaning | resolute protection |
| Variants | William, Uilliam, Will, Willem |
| Popularity | Most popular US boys' name from 2017 onward, including the 2020s |
The meaning and origin of Liam
The name Liam means “resolute protection” and has Irish (Germanic root) origins. Liam is an Irish short form of Uilliam, the Gaelic form of William, ultimately from Germanic 'wil' (will, desire) and 'helm' (helmet, protection). It surged from a traditional Irish nickname to a globally dominant given name.
Variants and related names
Liam is related to several other names you may recognize: William, Uilliam, Will, Willem. These share a common root or are spelling and language variants of the same name.
How popular is the name Liam?
Most popular US boys' name from 2017 onward, including the 2020s
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Open the name generator →Frequently asked questions
What does the name Liam mean?+
The name Liam means “resolute protection” and is of Irish (Germanic root) origin.
What is the origin of the name Liam?+
Liam originates from Irish (Germanic root).
Is Liam a popular name?+
Yes — see the popularity note above for how Liam has trended in the US over time.
Liam by gender
More boy's names
Sources
- Behind the Name — Etymology and history of first names — Behind the Name
- US Social Security Administration — Popular baby names by year — Social Security Administration
- A Dictionary of First Names — Oxford Reference — Oxford University Press