2003 Chicago Cubs season Game log July

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| July 1 | @ Phillies | 4–3 | Remlinger (4–2) | 25307 | 42–40 |
| July 2 | @ Phillies | 1–0 | Wendell (1–2) | 23591 | 43–40 |
| July 3 | @ Phillies | 12–2 | Zambrano (6–7) | 57326 | 43–41 |
| July 4 | Cardinals | 11–8 | Wood (8–6) | 39756 | 43–42 |
| July 5 | Cardinals | 6–5 | Fassero (1–4) | 38953 | 44–42 |
| July 6 | Cardinals | 4–1 | Prior (8–4) | 37713 | 44–43 |
| July 7 | Marlins | 6–3 | Beckett (3–4) | 38662 | 45–43 |
| July 8 | Marlins | 4–3 | Remlinger (5–3) | 33227 | 45–44 |
| July 9 | Marlins | 5–1 | Pavano (6–10) | 33054 | 46–44 |
| July 10 | Braves | 13–3 | Estes (6–8) | 38756 | 46–45 |
| July 11 | Braves | 9–5 | Prior (8–5) | 39334 | 46–46 |
| July 12 | Braves | 7–3 | Ramírez (8–3) | 39980 | 47–46 |