1998 Seattle Mariners season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 1 | @ Baltimore Orioles | 9-10 | Fossas (0-3) | 42622 | 26-30 |
| June 2 | @ Baltimore Orioles | 8-9 | Ayala (0-5) | 46724 | 26-31 |
| June 3 | Anaheim Angels | 1-8 | Johnson (5-4) | 24944 | 26-32 |
| June 4 | Anaheim Angels | 2-6 | Cloude (3-4) | 23709 | 26-33 |
| June 5 | Los Angeles Dodgers | 4-0 | Valdez (4-7) | 39053 | 27-33 |
| June 6 | Los Angeles Dodgers | 6-10 | Wells (0-1) | 49559 | 27-34 |
| June 7 | Los Angeles Dodgers | 4-7 | Moyer (3-6) | 41514 | 27-35 |
| June 8 | @ San Francisco Giants | 3-4 | Johnson (5-5) | 34166 | 27-36 |
| June 9 | @ San Francisco Giants | 6-7 | Cloude (3-5) | 24137 | 27-37 |