# Trainor (surname)

Source: https://namelineage.com/surname/trainor/  
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) | 6,816 |
| US rank (2010) | 5,136 of 162,253 |
| How often | about 1 in every 45,297 people |
| Change since 2000 | +1.4% (6,719 in 2000) |
| Pronunciation | not recorded |
| Variant spellings | none recorded |

## Etymology

Reduced Anglicized form of Irish Mac Thréinfhir (“son of Thréinfhear”) a personal name composed of the elements tréan (“strong”) + fear (“man”). Compare Cranor.

## Who carries it

Share of people named Trainor 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) | 94% |
| Black (not Hispanic) | 2.0% |
| Hispanic or Latino (any race) | 2.3% |
| Asian and Pacific Islander | 0.7% |
| American Indian and Alaska Native | 0.1% |
| Two or more races | 1.3% |

## Where

Wikidata records people named Trainor in the United States.

## People named Trainor

- Meghan Trainor, American singer-songwriter (born 1993)
- Jerry Trainor, American actor (born 1977)
- Mary Ellen Trainor, American actress (1952-2015)
- Tenzing Norgay Trainor, American actor (born 2001)

## Similar surnames

Traynor, Trainer, Treanor, Turner, Trimmer, Trenary.

## 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.