2006 Washington Nationals season Game log May

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| May 1 | @ New York Mets | 1-2 | Majewski (1-2) | 28310 | 8-18 |
| May 2 | @ New York Mets | 6-2 | Maine (0-1) | 34046 | 9-18 |
| May 3 | Florida Marlins | 5-6 | Stanton (1-3) | 21918 | 9-19 |
| May 4 | Florida Marlins | 3-11 | Hernández (1-4) | 20984 | 9-20 |
| May 5 | Pittsburgh Pirates | 6-0 | Pérez (1-5) | 21059 | 10-20 |
| May 6 | Pittsburgh Pirates | 4-5 (11) | Rodriguez (0-1) | 29953 | 10-21 |
| May 7 | Pittsburgh Pirates | 5-4 | Duke (2-3) | 30659 | 11-21 |
| May 9 | @ Cincinnati Reds | 7-1 | Claussen (2-4) | 16716 | 12-21 |
| May 10 | @ Cincinnati Reds | 6-9 | Stanton (1-4) | 14180 | 12-22 |
| May 11 | @ Cincinnati Reds | 4-5 (11) | Eischen (0-1) | 16716 | 12-23 |