1999 Toronto Blue Jays season Game log August

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| August 11 | @ Twins | 6 - 3 | Milton (4-9) | 15777 | 65-51 |
| August 12 | @ Twins | 3 - 0 | Hentgen (7-9) | 21206 | 65-52 |
| August 13 | Athletics | 9 - 8 | Halladay (8-5) | 34150 | 65-53 |
| August 14 | Athletics | 13 - 5 | Hamilton (5-7) | 37113 | 65-54 |
| August 15 | Athletics | 9 - 5 | Escobar (10-9) | 34677 | 65-55 |
| August 16 | Mariners | 7 - 5 | Carpenter (9-6) | 29308 | 65-56 |
| August 17 | Mariners | 8 - 5 | Hentgen (7-10) | 30137 | 65-57 |
| August 18 | Mariners | 5 - 1 | Wells (11-8) | 38224 | 65-58 |
| August 20 | @ Athletics | 11 - 0 | Oquist (9-8) | 13335 | 66-58 |
| August 21 | @ Athletics | 8 - 4 | Carpenter (9-7) | 26282 | 66-59 |