Continuity mistake: During the duel between Miraz and Peter, when they call for a time out, Miraz is shown in the background walking back to his generals and stepping onto a raised area. A few seconds later, over Peter's shoulder, he again walks to the raised area and steps up (there's only one step). (01:44:55)
Continuity mistake: When Miraz tells Glozelle to murder three of his men (right after Miraz and Sopespian are walking to their horses), Miraz's collar on his blue jacked repeatedly switches from folded down to straight up in consecutive shots.
Deliberate mistake: When Peter and Miraz are fighting, Peter stabs Miraz and then brings the sword back up for the killing stroke. There is no blood on the sword. This is deliberate on the part of Disney, so as not to show blood, but a mistake nonetheless.
Visible crew/equipment: When Caspian enters Miraz's room at night during the castle raid, there is one shot where Caspian is standing over Miraz in bed. The shadow of a camera is visible on Caspian's shoulder.
Continuity mistake: As the Pevensies hold hands in the train station about to be transported to Narnia, they see a beach appearing directly in front of them. Moments later in Narnia, that beach view is way off to their right side, and the view in front of them is a cave wall. (00:12:15)
Continuity mistake: When the Pevensies enter their treasure chamber at Cair Paravel, they open the locked door by removing part of the rotten door around the lock. However, when the door swings inwards, the lock remains in the door itself, not in the frame of the door as it should.
Continuity mistake: When Peter is talking to the White Witch, he has a deep cut above his left eye. when the camera changes to show Edmund stabbing the Witch from behind, Peter is miraculously healed, because in the next screen is Peter sitting down, breathing hard. But look above his left eye. No cut.
Continuity mistake: During the confrontation in Miraz's bedroom, Caspian's sword pricks his neck, drawing blood that starts running down his neck. The length of the blood trail changes from shot to shot: first it's down to his collarbone, then mid-neck, then back to the collarbone.
Visible crew/equipment: Near the end, when Peter bows before Aslan, the giant lion isn't visible in the reflection of Peter's sword, but the crew is. (02:11:00)
Continuity mistake: When Caspian is talking to the Badger and Dwarf in the cave, the Badger puts a bowl of soup (on a tray) on the table. The camera cuts to Caspian, and when it cuts back, the tray and soup are both gone.
Other mistake: After the trees wake up when the General is saying that they can still win if they retreat to the river, in the background there is a catapult that picks up a rock and never goes high enough to throw the rock or drop it, but when it comes back down, the rock is missing.
Other mistake: As the Telmarines advance out of the woods, there is a shot in which the mounted troops ride through a gap in the foot soldiers, then turn to line up in front. It is clear that this is a second take because the grass where the horsemen are about to ride is already trampled.