Glentoran | Champions League | Competitions
| Season | 1 | 2 | G | W‑D‑L | GF‑GA | Reached |
|---|---|---|---|---|---|---|
| 2009‑10 | 0‑6 | 0‑4 | 2 | 0‑0‑2 | 0‑10 | 2nd Qual. Round |
| 2005‑06 | 1‑2 | 1‑4 | 2 | 0‑0‑2 | 2‑6 | 1st Qual. Round |
| 2003‑04 | 0‑0 | 0‑1 | 2 | 0‑1‑1 | 0‑1 | 1st Qual. Round |
| 1999‑00 | 0‑3 | 0‑2 | 2 | 0‑0‑2 | 0‑5 | 1st Qual. Round |
| 1992‑93 | 0‑5 | 0‑3 | 2 | 0‑0‑2 | 0‑8 | 1st Round |
| Glentoran seasons in European Cup. Home games in bold. | ||||||