2005 Washington Nationals season Game log June

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| June 1 | Atlanta Braves | 4-5 | Carrasco (1-1) | 28280 | 27-26 |
| June 2 | Atlanta Braves | 8-6 | Kolb (1-5) | 29225 | 28-26 |
| June 3 | Florida Marlins | 3-2 (11) | Bump (0-3) | 29439 | 29-26 |
| June 4 | Florida Marlins | 7-3 | Leiter (2-6) | 33198 | 30-26 |
| June 5 | Florida Marlins | 6-3 | Riedling (2-1) | 40995 | 31-26 |
| June 7 | Oakland Athletics | 2-1 | Zito (2-7) | 26879 | 32-26 |
| June 8 | Oakland Athletics | 7-2 | Glynn (0-2) | 28749 | 33-26 |
| June 9 | Oakland Athletics | 4-3 | Blanton (1-6) | 26672 | 34-26 |
| June 10 | Seattle Mariners | 9-3 | Hasegawa (1-2) | 28707 | 35-26 |
| June 11 | Seattle Mariners | 2-1 | Putz (1-2) | 39108 | 36-26 |
| June 12 | Seattle Mariners | 3-2 | Franklin (2-8) | 37170 | 37-26 |