Continuity mistake: After Gandalf and Pippin have their unfortunate meeting with Denethor, they walk towards the prow of the city. As they stand there, the distance between themselves and the White Tree/guards/statues differs significantly between Gandalf's and Pippin's individual close-ups, their back shots and when Gandalf moves closer to Pip. In some of these consecutive shots soldiers walk up the ramp in front of the White Tree, yet in other shots they're non-existent. (Extended Edition) (00:48:50)Super Grover
Continuity mistake: When the Rohirrim arrive at Minas Tirith, they are lined up in formation. In the first shot of Eowyn with Merry we see the rider's body to her left in line with her. In the next close-up of Merry we see the white horse's face right next to Merry, but in the next shot of Eowyn with Merry, the rider, whose horse is brown in these wide shots of Eowyn, is in line with her again. Then in another close-up of Merry, we see the horse's white face yet again. Also, in the shot from behind, that rider does not wear his helmet as in the rest of the side shots.Super Grover
Audio problem: After Gollum frames Sam with the lembas, Sam starts to hit Gollum while shouting at him. When Sam yells, "Call me..." his mouth does not move. Then when Frodo pushes Sam away, Sam shouts, "I'll kill him!" but his lips are moving before we even hear those words, it is out of sync. (01:04:15)Super Grover
Continuity mistake: Pippin steals the palantir from Gandalf and replaces it with the water pitcher while Gandalf is sleeping. In the extreme close-up, when Gandalf refocuses his eyes the pitcher is seen at his arm. However in the next close-up, Gandalf has NOT even moved yet, but the pitcher is not at his arm in this shot. We do not see or hear the pitcher fall on the floor in this shot. (00:21:20)
Deliberate mistake: While Faramir leads the Gondorian soldiers as they ride down the path in Minas Tirith, in the wideshot just prior to when Gandalf shouts, "Faramir!" they pass particularly distinctive buildings and a statue - this wideshot is flipped, the swords are at the soldiers' right sides. Then about ten shots later, they pass the same buildings and statue as they ride towards the front gate. (01:29:40)Super Grover
Continuity mistake: On the Paths of the Dead, while Legolas tells the history of the Dead Men, there is a close-up of Gimli's face, and Legolas' bow and arrows are seen too. In the next shot, the position of his blades on his back differ, as they are now slanted, with the bow and arrows seen between them. (01:23:25)Super Grover
Continuity mistake: When Theoden "reforms the line" as the Mumakil approach, there are empty fields behind the horses. In the overhead shot of them charging, it is seen that there are still orcs in the background who should have been there in the previous shot.
Continuity mistake: After Denethor dies, in the side shot of Minas Tirith (its right side when facing the city) the considerable vast gap between the Citadel at the top of the city, with the bridge that leads to the Tomb of the Stewards/large cemetery, and the mountain behind is shown; however, in other side shots the Citadel is much closer to the mountain. In the many aerial and ground wideshots of the distinctive buildings of Minas Tirith as a whole, there are very significant changes in the design and position of buildings, stone railings, etc., some of which disappears then reappears. There are changes in the texture/landscape of the high center prow and the mountainsides beside the city levels as well. (This has nothing to do with damage sustained or with camera angle.) (00:45:35)Super Grover
Continuity mistake: On the fields of Pelennor, Theoden yells, "Bring it down!" three times in succession. As Theoden yells the first, "Bring it down!" Gamling has the bow in his hand and lets loose an arrow, with particular soldiers around him. In the next shot, Theoden yells the second, "Bring it down!" Gamling now has a sword in his hand, with other people around him. (02:06:45)Super Grover
Continuity mistake: While walking in Mordor, Sam yells "Frodo, get down!" and in the first wide shot Frodo turns his body towards Sauron's Eye as Sam drops down. In the next shot Sam is in the background, Frodo's arm is in the foreground and Frodo has not turned yet. Also, in the shot of him facing the Eye, Frodo's face and neck are cleaner than in the shots before and after. (02:28:55)Super Grover
Continuity mistake: After telling Éowyn, "I cannot give you what you seek," Aragorn leads Brego away for his departure from Dunharrow and the edge of the rolled blanket, secured in the saddle bag on Brego's left, faces Brego. However, when Aragorn approaches Gimli the edge of that blanket, on Brego's left, now faces away from Brego. (01:20:05)Super Grover
Continuity mistake: During the siege of Gondor, when Pippin saves Gandalf by stabbing the Orc, he has to run forward to do so, and Gandalf turns to see what he has done. Despite this, when he says, 'Guard of the Citadel, indeed.' he turns backwards to look down at Pippin, although Pippin stepped back after stabbing the Orc it was only a few steps, and he should still be in front of Gandalf.
Factual error: Gollum's body wouldn't sink into the lava if he fell in it as shown in the movie. Rather his body would burst into flames, and turn to ash. Falling in lava isn't like falling into a lake. Lava is more than three times denser than water, which prevents a human shaped body from sinking in.