O'Toole (surname)
| Origin | |
|---|---|
| Language(s) | Celtic languages: old Irish |
| Derivation | Ó Tuathail |
| Meaning | descendant of tuathal |
| Region of origin | Leinster, Ulster |
| Other names | |
| Variant form(s) | Toole, Toal, MacToole, McToole |
O'Toole is a surname of Irish origin. It an anglicized form of the Gaelic Ó Tuathail meaning "descendant of Tuathal", composed of tuath "the people" and gal "mighty". The O'Toole family were a leading clan in Gaelic Leinster and Ulster.