| Full name: | Robert O'Brien |
| Born: | 16th July 1869, Redfern, New South Wales, Australia |
| Died: | 2nd October 1922, Brisbane, Queensland, Australia |
| Batting: | Right-hand batter |
| Bowling: | Right-arm medium pace |
| Teams: | Queensland (Main FC: 1892/93-1896/97); All teams |
| Lists of matches and more detailed statistics | |
| First-Class Career Batting and Fielding (1892/93-1896/97) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| Queensland | 4 | 8 | 1 | 80 | 48 | 11.42 | 0 | 0 | 3 | |
| First-Class Career Bowling (1892/93-1896/97) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Queensland | 618 | 32 | 224 | 5 | 3-40 | 44.80 | 0 | 0 | 123.60 | 2.17 |