1979 Toronto Blue Jays season Game log June

| Date_ | Opponent | Score | Loss | Record |
|---|---|---|---|---|
| June 1 | @ Mariners | 7–2 | Jefferson (0–5) | 12–39 |
| June 2 | @ Mariners | 6–2 | Jones (0–6) | 13–39 |
| June 3 | @ Mariners | 10–5 | Lemongello (1–7) | 13–40 |
| June 4 | @ Angels | 4–2 | Huffman (2–6) | 13–41 |
| June 5 | @ Angels | 3–0 | Underwood (0–8) | 13–42 |
| June 6 | @ Angels | 5–4 | LaRoche (2–5) | 14–42 |
| June 8 | @ Athletics | 2–1 | Heaverlo (2–6) | 15–42 |
| June 9 | @ Athletics | 5–0 | Keough (0–8) | 16–42 |
| June 10 | @ Athletics | 12–1 | Underwood (0–9) | 16–43 |
| June 11 | Mariners | 2–0 | Bannister (3–6) | 17–43 |
| June 12 | Mariners | 5–1 | Jefferson (1–6) | 17–44 |
| June 13 | Angels | 9–8 | LaRoche (2–6) | 18–44 |
| June 13 | Angels | 10–2 | Willis (0–3) | 18–45 |