Indy 500 Career Stats - Pat O'Connor
| Starts | Total Laps | Poles | Best Finish | Top 5 | Top 10 | Races Led | Laps Led | Winnings |
| 5 | 768 | 1 | 8 | - | 2 | 2 | 46 | $ 29,806 |
| Year | Finish | Start | Car # | Car Name/Entrant* | C/E/T | Qual Speed | Run/Out | Laps | Led | Winnings |
| 1958 | 29 | 5 | 4 | Sumar | KK500G / Offy / Firestone | 144.820 | Accident | 0 | 0 | $2,574 |
| 1957 | 8 | 1 | 12 | Sumar | KK500G / Offy / Firestone | 143.940 | 132.281 | 200 | 7 | $8,619 |
| 1956 | 18 | 3 | 7 | Ansted Rotary | KK500D / Offy / Firestone | 144.980 | Running | 187 | 39 | $8,924 |
| 1955 | 8 | 19 | 29 | Ansted Rotary | KK500D / Offy / Firestone | 139.190 | 124.644 | 200 | 0 | $6,414 |
| 1954 | 21 | 12 | 35 | Hopkins | KK500C / Offy / Firestone | 138.080 | Spun out | 181 | 0 | $3,275 |
