2003 Toronto Blue Jays season Game log May

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| May 11 | @ Angels | 4 - 2 | Washburn (3-4) | 32129 | 18-20 |
| May 13 | Devil Rays | 7 - 5 | Sturtze (3-4) | 14007 | 18-21 |
| May 14 | Devil Rays | 7 - 6 | Brazelton (0-2) | 29013 | 19-21 |
| May 15 | Devil Rays | 9 - 5 | Davis (1-2) | 20417 | 19-22 |
| May 16 | @ Royals | 18 - 1 | George (4-3) | 24167 | 20-22 |
| May 17 | @ Royals | 7 - 4 | Grimsley (1-3) | 25032 | 21-22 |
| May 18 | @ Royals | 4 - 3 | Snyder (0-1) | 15462 | 22-22 |
| May 19 | @ White Sox | 12 - 2 | Wright (0-2) | 19628 | 23-22 |
| May 20 | @ White Sox | 4 - 1 | Davis (1-3) | 12857 | 23-23 |