European Competition 2018 |
| Champions League | |||||||
| 2nd Qualifying Round 1st & 2nd Leg | |||||||
 |
Linfield | 0 | 2 | Celtic | SPL | Windsor Park | Match date was moved to avoid clashing with The Tweltfth or Orangemen's Day |
| SPL | Celtic | 4 | 0 | Linfield | |
Parkhead | agg 6-0 |
| 3rd Qualifying Round 1st & 2nd Leg | |||||||
| SPL | Celtic | 0 | 0 | Rosenborg BK Trondheim |  |
Parkhead | |
|
Rosenborg BK Trondheim | 0 | 1 | Celtic | SPL | Lerkendal Stadion | agg 0-1 |
| Play Off 1st & 2nd Leg | |||||||
| SPL | Celtic | 5 | 0 | Astana |  |
Parkhead | |
|
Astana | 4 | 3 | Celtic | SPL | Astana Arena | agg 4-8 |
| Champions League Group B | |||||||
 |
Anderlecht | 0 | 3 | Celtic | SPL | Constant Vanden Stock Stadium | |
 |
Bayern Munich | 3 | 0 | Celtic | SPL | Allianz Arena | |
| SPL | Celtic | 0 | 5 | Paris St Germain |  |
Parkhead | |
| SPL | Celtic | 1 | 2 | Bayern Munich | |
Parkhead | |
| SPL | Celtic | 0 | 1 | Anderlecht | |
Parkhead | |
|
Paris St Germain | 7 | 1 | Celtic | SPL | Parc des Princes | |
| Europa Cup | |||||||||
| 1st Qualifying Round 1st & 2nd Leg | |||||||||
| SPL | Rangers | 1 | 0 | Progrès Niederkorn |  |
Ibrox Stadium | |||
| SPL | St Johnstone | 1 | 2 | Trakai |  |
McDiarmid Park | |||
|
Progrès Niederkorn | 2 | 0 | Rangers | SPL | Stade Josy Barthel, Luxembourg City | agg 2-1 | ||
|
Trakai | 1 | 0 | StJohnstone | SPL | LFF Stadium | agg 3-1 | ||
| 2nd Qualifying Round 1st & 2nd Leg | |||||||||
| SPL | Aberdeen | 1 | 1 | NK Siroki Brijeg |  |
Pittodrie | |||
|
Siroki Brijeg | 0 | 2 | Aberdeen | SPL | Pecara Stadium | agg 1-3 | ||
| 3rd Qualifying Round 1st & 2nd Leg | |||||||||
| SPL | Aberdeen | 2 | 1 | Apollon Limassol |  |
Pittodrie | |||
|
Apollon Limassol | 2 | 0 | Aberdeen | SPL | AEK Arena – Georgios Karapatakis, Larnaca | agg 3-2 | ||
| Europa League Rd 32 1st & 2nd Leg | |||||||||
| SPL | Celtic | 1 | 0 | Zenit St Petersburg |  |
Parkhead | |||
|
Zenit St Petersburg | 3 | 0 | Celtic | SPL | Krestovsky Stadium | agg 3-1 | ||