1977 Seattle Mariners season Game log July

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| July 1 | Milwaukee Brewers | 1-2 | Wheelock (4-5) | 16119 | 34-46 |
| July 2 | Milwaukee Brewers | 2-1 | Slaton (6-7) | 24466 | 35-46 |
| July 3 | Milwaukee Brewers | 3-10 | Pole (4-5) | 16226 | 35-47 |
| July 4 | Chicago White Sox | 2-6 | Montague (5-7) | 10897 | 35-48 |
| July 5 | Chicago White Sox | 1-4 | House (2-2) | 14032 | 35-49 |
| July 6 | Chicago White Sox | 2-4 | Wheelock (4-6) | 21526 | 35-50 |
| July 8 | @ Minnesota Twins | 13-11 | Thormodsgard (6-5) | 11966 | 36-50 |
| July 9 | @ Minnesota Twins | 5-2 | Goltz (9-6) | 23401 | 37-50 |
| July 10 | @ Minnesota Twins | 0-15 | Thomas (2-6) | 34213 | 37-51 |
| July 11 | @ Oakland Athletics | 1-8 | House (2-3) | 8760 | 37-52 |