# Leahy (surname)

Source: https://namelineage.com/surname/leahy/  
Publisher: Name Lineage. Counts from the US Census Bureau; origin and etymology from Wiktionary; bearers from Wikidata. Data updated 2026-11-11.

A surname from Irish.

| Field | Value |
|---|---|
| Origin | Irish |
| Type | patronymic, formed from a father’s (or ancestor’s) given name |
| People in the US (2010 Census) | 11,014 |
| US rank (2010) | 3,280 of 162,253 |
| How often | about 1 in every 28,032 people |
| Change since 2000 | +4.7% (10,515 in 2000) |
| Pronunciation | /ˈliːhi/, 2 syllables |
| Variant spellings | Lahey, Leahey, Leehey, Leehy, Lehigh |

## Etymology

Reduced Anglicized form of Irish Ó Laochda (“descendant of Laochda”), a personal name derived from laoch (“hero”).

## Who carries it

Share of people named Leahy in the 2010 US Census by the Census's own race and ethnicity groups. The Census suppresses a share when the count behind it is small.

| Group | Share |
|---|---|
| White (not Hispanic) | 95% |
| Black (not Hispanic) | 0.3% |
| Hispanic or Latino (any race) | 2.2% |
| Asian and Pacific Islander | 0.6% |
| American Indian and Alaska Native | 0.2% |
| Two or more races | 1.2% |

## Where

Wikidata records people named Leahy in the United States and Australia.

## People named Leahy

- Patrick Leahy, American politician and lawyer (born 1940)
- Conor Leahy, Australian cyclist
- Edward L. Leahy, American politician (1886-1953)

## Similar surnames

Le, Lea, La, Leh, Lahey, Leahey, Lee, Li, Lowe, Liu, Lu, Law.

## How to read these numbers

A Census count is people alive and counted in 2010, not births, and names occurring fewer than 100 times are not published at all. Ethnicity shares are the Census's own categories.