2008 San Francisco Giants season Game log May

| Date_ | Opponent | Score | Loss | Record |
|---|---|---|---|---|
| May 2 | @ Phillies | 6–5 (10) | Wilson (0–1) | 13–17 |
| May 3 | @ Phillies | 3–2 (10) | Seánez (2–2) | 14–17 |
| May 4 | @ Phillies | 6–5 | Yabu (2–2) | 14–18 |
| May 6 | @ Pirates | 12–6 | Sánchez (2–2) | 14–19 |
| May 7 | @ Pirates | 3–1 | Zito (0–7) | 14–20 |
| May 8 | @ Pirates | 5–4 | Cain (1–3) | 14–21 |
| May 9 | Phillies | 7–4 | Walker (1–1) | 14–22 |
| May 10 | Phillies | 8–2 | Moyer (2–3) | 15–22 |
| May 11 | Phillies | 4–3 | Romero (3–1) | 16–22 |
| May 12 | Astros | 7–3 | Chulk (0–1) | 16–23 |
| May 13 | Astros | 4–2 | Backe (2–5) | 17–23 |
| May 14 | Astros | 6–3 | Taschner (2–1) | 17–24 |
| May 15 | Astros | 8–7 | Chulk (0–2) | 17–25 |