# O'Malley (surname)

Source: https://namelineage.com/surname/omalley/  
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 | not recorded |
| People in the US (2010 Census) | 17,588 |
| US rank (2010) | 2,046 of 162,253 |
| How often | about 1 in every 17,554 people |
| Change since 2000 | +3.3% (17,027 in 2000) |
| Pronunciation | /oʊˈmæli/, 3 syllables |
| Variant spellings | none recorded |

## Etymology

Anglicisation of the Irish surname Ó Máille meaning "from/of Umaill". The name's origin is uncertain, but compare *maglos (“noble”), mall (“slow, stately”), málla (“pleasant”).

## Who carries it

Share of people named O'Malley 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) | 0.4% |
| Hispanic or Latino (any race) | 2.1% |
| Asian and Pacific Islander | 0.7% |
| American Indian and Alaska Native | 0.2% |
| Two or more races | 1.4% |

## Where

Wikidata records people named O'Malley in the United States and the United Kingdom of Great Britain and Ireland.

## People named O'Malley

- Martin O'Malley, American politician (born 1963)
- Mike O'Malley, American actor
- Sean O'Malley, American mixed martial artist (born 1994)
- Pat O'Malley, American stage and film actor (1890-1966)
- William O'Malley, American actor and priest (1931–2023)
- Stephen O'Malley, American musician
- John O'Malley, American Jesuit priest and professor of theology (1927–2022)
- Kathleen O'Malley, American actress (1924-2019)
- Walter O'Malley, American businessman (1903–1979)
- King O'Malley, Australian politician (1858-1953)
- Owen O'Malley, British diplomat (1887-1974)

## Similar surnames

O'Neill, O'Neal, O'Neil.

## 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.