2005 Colorado Rockies season Game log May

| Date_ | Opponent | Score | Loss | Attendance | Record |
|---|---|---|---|---|---|
| May 13 | Diamondbacks | 18–3 | Halsey (2–2) | 20233 | 10–23 |
| May 14 | Diamondbacks | 10–4 | Wright (2–3) | 23367 | 10–24 |
| May 15 | Diamondbacks | 5–4 | Jennings (1–5) | 28071 | 10–25 |
| May 17 | Giants | 9–4 | Lowry (1–5) | 20026 | 11–25 |
| May 18 | Giants | 3–2 | Fuentes (0–3) | 18620 | 11–26 |
| May 19 | Giants | 3–1 | Tomko (3–6) | 21877 | 12–26 |
| May 20 | @ Pirates | 9–4 | Wright (2–4) | 31656 | 12–27 |
| May 21 | @ Pirates | 8–3 | Jennings (1–6) | 37504 | 12–28 |
| May 22 | @ Pirates | 4–3 | Fogg (3–3) | 20853 | 13–28 |
| May 23 | @ Brewers | 2–1 | Chacón (1–4) | 11855 | 13–29 |
| May 24 | @ Brewers | 6–1 | Francis (4–2) | 17759 | 13–30 |
| May 25 | @ Brewers | 11–1 | Wright (2–5) | 24916 | 13–31 |