2003 Toronto Blue Jays season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 12 | Pirates | 5 - 4 | Suppan (5-6) | 15015 | 37-30 |
| June 13 | Cubs | 5 - 1 | Wood (5-5) | 23018 | 38-30 |
| June 14 | Cubs | 4 - 2 | Davis (3-4) | 33167 | 38-31 |
| June 15 | Cubs | 5 - 4 (10) | Guthrie (0-3) | 34221 | 39-31 |
| June 17 | @ Orioles | Postponed (rain) Rescheduled for July 3 | Postponed (rain) Rescheduled for July 3 | Postponed (rain) Rescheduled for July 3 | Postponed (rain) Rescheduled for July 3 |
| June 18 | @ Orioles | 6 - 2 | Daal (4-8) | 28828 | 40-31 |
| June 19 | @ Orioles | 6 - 1 | Helling (4-5) | 24218 | 41-31 |
| June 20 | @ Expos | 8 - 4 | Vázquez (6-5) | 11355 | 42-31 |