2005 Seattle Mariners season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 15 | Phillies | 5–1 | Padilla (3–6) | 26019 | 28–35 |
| June 16 | Phillies | 3–2 | Mateo (2–2) | 27162 | 28–36 |
| June 17 | Mets | 5–0 | Ishii (1–6) | 37443 | 29–36 |
| June 18 | Mets | 4–1 | Martínez (7–2) | 45841 | 30–36 |
| June 19 | Mets | 11–5 | Glavine (4–7) | 45785 | 31–36 |
| June 20 | Athletics | 6–2 | Villone (2–3) | 27263 | 31–37 |
| June 21 | Athletics | 4–2 | Piñeiro (2–4) | 31673 | 31–38 |
| June 22 | Athletics | 5–4 | Glynn (0–4) | 28829 | 32–38 |
| June 23 | Athletics | 5–0 | Franklin (3–9) | 37549 | 32–39 |
| June 24 | @ Padres | 14–5 | May (1–2) | 35942 | 33–39 |
| June 25 | @ Padres | 8–5 | Sele (6–6) | 33926 | 33–40 |
| June 26 | @ Padres | 5–4 | Mateo (2–3) | 39098 | 33–41 |
| June 28 | @ Athletics | 8–1 | Moyer (6–3) | 14384 | 33–42 |