| Grainne Leahy | |
| Female: | yes |
| Country: | Ireland |
| Fullname: | Grainne Maire Leahy |
| Birth Date: | 2 August 1966 |
| Birth Place: | Dublin, Ireland |
| Batting: | Right handed |
| Role: | Top order batter |
| International: | true |
| Odidebutdate: | 5 August |
| Odidebutyear: | 1997 |
| Odidebutagainst: | South Africa |
| Odicap: | 33 |
| Lastodidate: | 11 August |
| Lastodiyear: | 2001 |
| Lastodiagainst: | Scotland |
| Hidedeliveries: | true |
| Columns: | 1 |
| Column1: | WODI |
| Matches1: | 11 |
| Runs1: | 55 |
| Bat Avg1: | 5.50 |
| 100S/50S1: | 0/0 |
| Top Score1: | 17 |
| Catches/Stumpings1: | 3/– |
| Date: | 6 January |
| Year: | 2017 |
| Source: | https://cricketarchive.com/Archive/Players/17/17176/17176.html CricketArchive |
Grainne Maire Leahy O'Brien (born 2 August 1966 in Dublin) is an Irish international cricketer who debuted for the Ireland national side in 1997. A top order batter, she played 11 One Day International matches.[1]