Continuity: When Grace (Mystique) walks up to the guard of the plastic prison and sits down opposite him, she puts down two beers on the table and puts her hands to her chest. In the following shot her left hand is still on the beer glass.

Continuity: When Nightcrawler is inside the Oval Office, he jumps on the President, and the President's leather chair changes direction between shots.

Continuity: When the SWAT team are inside the mansion, Logan jumps down to save Rogue Bobby and John, and he chucks two guys back some distance. In the overhead shot, the four SWAT guys are together on the floor, instead of two of them being some distance away like we saw in the previous shot.

Continuity: In the museum scene at the beginning when Iceman freezes the guy on the floor, you can see a guy standing beside him with jeans and red boots on. The shot goes back to the guy on the floor and the one who was standing beside him is now standing behind him.

Continuity: When Xavier is in the plastic prison with Magneto, at the end of this scene, you see Xavier put his hands on the doors of the prison, but in the following shot from outside the prison his hands have changed positions on the doors.

Continuity: Close to the beginning of the film when we see Wolverine approach Cerebro, you can see him from the back entering Cerebro from the left, yet on the face shot he is entering Cerebro from the right.

Continuity: When we see Logan in Cerebro with Professor Xavier trying to find Nightcrawler, Xavier's metal hat in one shot is completely covering his ears, yet in several shots after it's not covering his ears and the hat is a lot looser.

Continuity: When Bobby gives Rogue the clothes, it's shown that she is not wearing a bra. But when she is draining John's power later, a bra strap is visible on her shoulder.

Continuity: When Wolverine handed the bottle of Dr Pepper to Bobby, he was holding the body of the bottle. But when the shot changes to show Bobby taking the bottle, Wolverine was holding the bottle neck.

Revealing: Towards the end, when the mutant children are running through the snow, Artie (the green-tongue boy) isn't really bare-foot, he's wearing coverings that protect his feet from the snow.

Continuity: When Mystique is looking around in Stryker's computer, she notices a folder marked "Cerebro", next to the "Delete" icon on the screen. However, when she opens the folder, we cut to a wide shot and the icons around the delete icon have renamed themselves, plus the cerebro folder itself has disappeared.

Continuity: When they show a shot of the captured children in the cell, all of the children are barefooted, but when they show the children running in the snow after escaping the dam, a few of them are wearing brown slippers. When did they get a chance to put those on?

Continuity: Near the start in the museum, when Pyro is asked for his lighter and refuses, watch him playing with his lighter. One shot shows the top flipped open away from him, but when the angle changes it's facing towards him. There's no time it's out of shot for it to move.

Continuity: When Cyclops knocks Lady Deathstrike down with his beam at the plastic prison of Magneto and she gets back up, her eyes are blue with the contacts. However, when she flies through the air and pins Cyclops against the wall, her eyes are their natural color, brown.

Other: When the X-Mansion is being attacked, Wolverine jumps off the stairs onto two soldiers and throws them backwards with his claws. The soldiers are level with his wrists as they begin flying back. If they had been thrown in such a way, they would have followed the same path through the air as Wolverine's claws.

Continuity: In the scene where we see the X-Men and Magneto inside the jet at Alkali Lake, they are going over a map of the base, the camera cuts to Nightcrawler and Pyro, in this shot we see Pyro with his hands behind the head rest not visible, yet in the following shot his hands are now visible above his head, then the shot after back to being behind the head rest.

Continuity: When Wolverine is first seen, the camera pans along a barbed wire fence which is almost straight, yet in another shot, all the barbed wire is broken off the fence or is hanging down from it.

Continuity: Near the beginning when Storm and Jean Grey are in the church and Jean is holding Nightcrawler upside down, from the front you can see his cloak at the back hanging down obviously, yet the shot from the back shows no cloak at all hanging down.

Continuity: When we see Logan enter the mansion and Rogue comes to greet him, Iceman is standing just behind Rogue, then the camera cuts to a front view, and Iceman is now shoulder to shoulder with Rogue, then it cuts to the back again, and he is back behind Rogue.

Continuity: When Wolverine is in the schools kitchen with Iceman, you see Iceman point to a cupboard. If you watch closely between shots Iceman's finger changes from being a little limp and pointing down, to being straight and pointing up.