1977 Seattle Mariners season Game log May

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| May 1 | @ New York Yankees | 2-5 | Abbott (0-3) | 20477 | 8-17 |
| May 3 | @ Boston Red Sox | 10-8 | Wise (1-2) | 12422 | 9-17 |
| May 4 | @ Boston Red Sox | 2-5 | Thomas (1-3) | 11408 | 9-18 |
| May 5 | @ Boston Red Sox | 2-5 | Segui (0-4) | 10358 | 9-19 |
| May 6 | @ Baltimore Orioles | 1-4 | Abbott (0-4) | 4402 | 9-20 |
| May 7 | @ Baltimore Orioles | 2-4 | Jones (0-1) | 16212 | 9-21 |
| May 8 | @ Baltimore Orioles | 4-6 | Pole (0-1) | 9638 | 9-22 |
| May 9 | @ Toronto Blue Jays | 4-10 | Thomas (1-4) | 11680 | 9-23 |
| May 10 | @ Toronto Blue Jays | 3-9 | Montague (3-3) | 13017 | 9-24 |