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Continuity mistake: As Potter walks into the Knight Bus you see Stan lifting Potter's trunk inside. When it cuts, the way Stan comes in with the trunk changes. (00:08:45)

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Continuity mistake: When Potter points his wand at Uncle Vernon you can see his index finger on the wand. When it cuts his index finger is pulled back. [Harry has obviously jerked backward when Uncle Vernon approaches him -- Vernon is obviously closer in the second shot -- and it would be a natural reflex to withdraw his finger as well.] (00:06:25)

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Continuity mistake: After Potter and Hermione have escaped with Buckbeak, Dumbledore says, "I don't think the Minister's suggesting you had anything to do with it." At that time you can see three crows on the roof above Hagrid, and one of the crows takes off. When the scene cuts back there are still three crows on the roof. (01:50:10)

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Continuity mistake: When Tom and Potter arrive in the Minister's office Potter goes straight to Hedwig. When Tom says, "He arrived here just five minutes before yourself." you see Potter touch Hedwig's beak. When it cuts he is touching Hedwig's cheek. (00:12:30)

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Continuity mistake: When Malfoy and his friends take off, after Harry has beaten them, you can see Hermione and Ron standing in the background with their backs to a fence. When it cuts to a closeup of them they are suddenly standing behind a tree. (01:00:30)

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Continuity mistake: The first time Dumbledore knocks on Hagrid's door, you hear him knocking three times. Later when Potter and Hermione have travelled back in time you hear Dumbledore knocking three times, rapidly followed by four more knocks. (01:21:55 - 01:47:15)

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Audio problem: In Lupin's Boggart class when Ron gives the spider skates, it cuts to Lupin saying, "You see? Very good.", but the words aren't in sync with his mouth. (00:41:35)

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Revealing mistake: After Ron has been dragged down the hole by the Grim, you see both Harry and Hermione get hit by The Whomping Willow and they fly backwards and land on the ground. Notice when Harry places his left arm in the ground, the ground is unnaturally soft. (01:25:00)

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Continuity mistake: When they discover The Fat Lady is gone from her painting as the Head Boy says "Let me through. Excuse me, I'm Head Boy." you can see Potter, Hermione, Ron and Neville change position between the shots. (00:45:55)

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Continuity mistake: When Potter is messing with Malfoy and the other two kids outside the Shrieking Shack, as Potter drags down the cap on one of the kids, you can see the kid's scarf is suddenly tied. It wasn't tied in the earlier shot, and Potter could not have tied it that fast. (01:00:00)

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Continuity mistake: At Snape's class when Hermione shows up and Ron says "Did you see her come in?", you see Potter turning around facing Hermione. When it cuts to Snape saying "Now, which one of you can tell me the difference..." you can see Potter is now looking at his book. When it cuts back Potter is facing in Hermione's direction again. (00:50:20)

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Continuity mistake: After the Weasley's have handed over the Marauder's Map to Potter, George puts his wand on the Map while saying, "I solemnly swear that I'm up to no good." When it cuts to a closeup of the map, you can see the way Potter is holding it changes, and the way George's wand is on it changes. (00:57:25)

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Continuity mistake: When Trelawny says "Look at the cup, tell me what you see" to Ron, the way Ron holds the cup changes between shots. (00:29:10)

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Continuity mistake: When Harry picks up 'The Monster book of Monsters' you see him holding his right hand at the top at the book. When it cuts to a closeup of the book while he is holding it, you can see his hand is on the middle of the book. In the following shot his hand is on the top of it again. (00:14:35)

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Revealing mistake: When they look at the newspaper about Sirius being sighted you can see the picture of Sirius on the newspaper doesn't move at all. (00:37:55)

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Continuity mistake: At the hospital, after Potter fell off his broom as Hermione says "No one blames you, Harry", you can see Ron standing behind her. At this time we can see the letter "H" on the cloth that is wrapped around the broom. Later, the letter "E" is visible instead. (00:54:45)

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Continuity mistake: When Potter and Hermione watch Fudge, Dumbledore and the executioner heading down to Hagrid's, Hermione says "Fudge is coming." Potter then turns his head. When it cuts he turns it again. (01:46:40)

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Continuity mistake: Outside Hagrid's, when Fudge says "We must search the grounds," the way Dumbledore holds his staff changes between shots. (01:50:15)

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Continuity mistake: When Potter is looking at the 'Jack in the box' you can see Lupin in the background flipping his wand forward. When it cuts he has his hand and the wand behind his back. (00:42:10)

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Continuity mistake: When Malfoy shouts "Dementor. Dementor." all the kids turn around. Then we see Malfoy and some kids put their hoods on, and at the same time we can see Hermione turn back. When it cuts to Potter turning back we can briefly see Hermione turn back again. (00:31:45)

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