| Club: | AS Saint-Étienne |
| Season: | 2011–12 |
| Chrtitle: | President |
| Chairman: | Bernard Caïazzo Roland Romeyer |
| Mgrtitle: | Head coach |
| Manager: | Christophe Galtier |
| Stadium: | Stade Geoffroy-Guichard |
| League: | Ligue 1 |
| League Result: | 7th |
| Cup1: | Coupe de France |
| Cup1 Result: | Round of 64 |
| Cup2: | Coupe de la Ligue |
| Cup2 Result: | Round of 16 |
| League Topscorer: | Pierre-Emerick Aubameyang (16) |
| Season Topscorer: | Pierre-Emerick Aubameyang (18) |
| Average Attendance: | 21,533[1] |
| Pattern La1: | _asse1112h |
| Pattern B1: | _asse1112h |
| Pattern Ra1: | _asse1112h |
| Pattern Sh1: | _asse1112h |
| Pattern So1: | _asse1112h |
| Leftarm1: | 4DA976 |
| Body1: | 124220 |
| Rightarm1: | 124220 |
| Shorts1: | 008810 |
| Socks1: | 008810 |
| Pattern La2: | _asse1011a |
| Pattern B2: | _asse1112a |
| Pattern Ra2: | _asse1011a |
| Pattern Sh2: | _asse1112a |
| Pattern So2: | _celtic1011h |
| Leftarm2: | FFFFFF |
| Body2: | FFFFFF |
| Rightarm2: | FFFFFF |
| Shorts2: | 007510 |
| Socks2: | FFFFFF |
| Prevseason: | 2010–11 |
| Nextseason: | 2012–13 |
The 2011–12 season was the 78th season in the existence of AS Saint-Étienne and the club's eighth consecutive season in the top flight of French football.
See main article: 2011–12 Ligue 1.
See main article: 2011–12 Coupe de France.
See main article: 2011–12 Coupe de la Ligue.