1977 Seattle Mariners season Game log April

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| April 16 | @ California Angels | 4-6 | Montague (0-1) | 19690 | 4-7 |
| April 17 | @ California Angels | 11-7 | Monge (0-1) | 13813 | 5-7 |
| April 18 | Texas Rangers | 8-6 | Alexander (1-1) | 9535 | 6-7 |
| April 19 | Texas Rangers | 1-3 | Wheelock (2-1) | 10947 | 6-8 |
| April 20 | Texas Rangers | 2-5 | Montague (0-2) | 10763 | 6-9 |
| April 22 | Kansas City Royals | 5-6 | Pagan (0-1) | 19756 | 6-10 |
| April 23 | Kansas City Royals | 6-8 | Segui (0-3) | 22685 | 6-11 |
| April 24 | Kansas City Royals | 1-16 | Wheelock (2-2) | DH | 6-12 |
| April 24 | Kansas City Royals | 4-2 | Splittorff (1-1) | 21734 | 7-12 |
| April 26 | @ Minnesota Twins | 3-5 | Thomas (1-1) | 3422 | 7-13 |
| April 27 | @ Minnesota Twins | 3-5 | Moore (1-1) | 3170 | 7-14 |