During the Credits
There are no extra scenes during the credits of The Grey.
After the Credits
There is a very short scene after the credits of The Grey. Check out more details and spoilers below.
After the credits there is an extra scene that shows Ottway (Liam Neeson) still alive and lying on top of the wolf. The film is ambiguous as to who the victor is and whether Ottway is mortally wounded.
Special thanks to Steve and scottaa for the stinger submissions!