| Full name: | Robin O'Brien |
| Born: | 20th November 1932, Shillong, Assam, India |
| Died: | 26th August 1959, Birchwood Farm, Biddenden, Kent, England |
| Batting: | Right-hand batter |
| Bowling: | Right-arm off-break |
| Other Sports: | Golf for Cambridge University (Blue). |
| Relations: | Brother: TB O'Brien |
| Teams: | Cambridge University (Main FC: 1954-1956); Kent Second XI (Minor Counties Championship: 1954-1955); All teams |
| Lists of matches and more detailed statistics | |
| First-Class Career Batting and Fielding (1954-1958) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| Overall | 40 | 74 | 3 | 1609 | 146 | 22.66 | 2 | 5 | 10 | |
| First-Class Career Bowling (1954-1956) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Cambridge University | 6 | 0 | 4 | 0 | 0-4 | 4.00 | ||||
| Minor Counties Championship Career Batting and Fielding (1954-1955) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| Kent Second XI | 5 | 5 | 0 | 20 | 17 | 4.00 | 0 | 0 | 9 | |
| Minor Counties Championship Career Bowling (1954-1955) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Kent Second XI | 12 | 0 | 9 | 1 | 1-9 | 9.00 | 0 | 0 | 12.00 | 4.50 |