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The short answer
Fallon is a feminine name used in English. Behind the Name describes it this way: "From an Irish surname that was an Anglicized form of the Irish Gaelic Ó Fallamháin, itself derived from the given name Fallamhán meaning ‘leader’. It was popularized in the 1980s by a character on the soap opera Dynasty." It ranked #779 for girls in the United States in 2025.
Meaning and etymology
According to Behind the Name, from an Irish surname that was an Anglicized form of the Irish Gaelic Ó Fallamháin, itself derived from the given name Fallamhán meaning ‘leader’. It was popularized in the 1980s by a character on the soap opera Dynasty. The entry lists its usage as English (Modern).
Editorial confidence: likely
Popularity
Fallon ranked #779 for girls in the United States in 2025. The figure comes from the Social Security Administration's national file for that year.
| Region | Year | Rank | Source |
|---|---|---|---|
| United States | 2025 | #779 | ssa-2025 |
If you like this name
Names that Behind the Name files under the same origin (English) and that sit near Fallon in the 2025 American rankings.
Similar by origin
Frequently asked questions
What does the name Fallon mean?
Behind the Name does not give Fallon a one-word meaning. It describes the name as follows: from an Irish surname that was an Anglicized form of the Irish Gaelic Ó Fallamháin, itself.
Is Fallon a popular name?
Fallon ranked #779 for girls in the United States in 2025. (Social Security Administration data).
Is Fallon a boy's or a girl's name?
In the 2025 SSA data Fallon appears in the girls' list; Behind the Name labels it feminine.
Sources
- Behind the Name: Meaning, origin and history of the name Fallon — supports meaning, usage, pronunciation, variants.
- U.S. Social Security Administration: Popular Baby Names — national data, year of birth 2025 — supports popularity.
