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Continuity mistake: As the Knight Bus stops outside the Leaky Cauldron we see Stan Shunpike fold the newspaper as Harry flies forward. When it cuts we see Stan Shunpike fold the newspaper again right before Harry hits the window. (00:11:40)

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Continuity mistake: When Uncle Vernon is pouring brandy to Aunt Marge we see Harry picking up a plate from the floor while holding two other plates in his left hand. When it cuts Harry is still holding the two plates, but something which appears as a napkin or something has appeared in his hand as well. You can see it sticking out between the plates. Whatever it is it wasn't there in the previous shot. (00:02:40)

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Revealing mistake: Watch as Hedwig lands on Harry's arm. It's quite obvious he has some protection under the shirt sleeve as his arm and wrist is unnaturally thick. (00:14:00)

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Continuity mistake: When Harry is facing the Boggart shaped as a clown, as Lupin says "Wonderful, wonderful" in the background, we can see Hermione standing right next to another girl behind Harry. But when it cuts to a wide shot from beside them we see Harry standing and we see Hermione standing behind him, but the girl next to her is nowhere in sight. (00:42:10)

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Continuity mistake: As Malfoy is approaching Buckbeak saying, "You great ugly brute," we see Hagrid turn around. Watch the dead ferrets hanging around his neck. They hang further down around his neck than they do in the next shot. (00:35:25)

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Continuity mistake: When Harry is dragging Malfoy by his legs the snow on Malfoy's cloak change between the shots. (01:00:15)

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Continuity mistake: When the Weasley's have given Harry the Marauders Map, after one of them says "We owe it so much", Harry opens the map. When it cuts he opens it again. (00:57:35)

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Continuity mistake: When Potter has entered the Knight Bus you see him passing a bed. While doing so he grabs the bed pole and lets go of it, but when it cuts you can see him still holding the pole. (00:08:55)

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Continuity mistake: At Shrieking Shack when Lupin says "You sold James and Lilly to Voldemort, didn't you?" to Pettigrew, you see Pettigrew holding onto the piano with his left hand. Next shot he isn't holding onto it. (01:32:00)

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Continuity mistake: When Lupin is turning into a werewolf and Sirius comes at him while saying, "Remus, my old friend. Have you taken your potion tonight?" Lupin's shadow on the ground change position in the next shot. (00:35:20)

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Continuity mistake: As Potter is walking back to Trelawney with the ball, as he enters the room through the tight passage, you can see light is shining in. When it cuts to him entering the room the light is gone. (01:17:35)

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Continuity mistake: When Potter is learning the Patronus charm, as he is facing the candle and is talking about his memory and saying "It's the happiest I've ever felt.". His hair has an extreme change in the next shot. (01:07:10)

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Continuity mistake: When Trelawney is looking in Neville's cup, a white cup is in front of a saucer on the table. When it cuts the cup has moved to the other side of the saucer. (00:28:55)

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Continuity mistake: When everyone, except Harry, leaves to Hogsmeade village, Hermione is waving as she and Ron walk directly behind McGonagall, with the last of the crowd of children ahead of them still in the courtyard. There is a short cut facing Harry now standing IN the doorway. Then the next shot from behind Harry, shows Ron and Hermione still walking past the fountain, but now McGonagall and the entire crowd of children are out of the courtyard. They could not have walked away that fast. (00:43:35)

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Continuity mistake: When Harry and Ron are looking at the clipping from Egypt the clipping lies on the table. Its position changes in the shot when the Weasleys arrive. (00:16:15)

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Continuity mistake: When Trelawney is walking towards the table that Potter, Ron and Hermione are sitting at, you can see the book on the table is closed. When Trelawney gasps it cuts to Ron and you can see the book is actually open. (00:29:00)

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Continuity mistake: As Harry is about to drop his shoe on the floor in front of the Monster Book of Monsters, there is a closeup of Hedwig sitting on the chair. When it cuts to a wide shot, you can see that Hedwig has moved to farther to the left on the chair. (00:15:15)

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Continuity mistake: After Harry opens the front door for Uncle Vernon and Aunt Marge, Vernon walks into the living room and Harry follows him. Harry stops before he walks over the door step, but when it cuts you can see he has crossed over it. (00:01:55)

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Audio problem: In the Knight Bus, when Shrunken Head says, "Yeah, take..." in the front shot, his mouth, cheek and jaw move as he speaks. As he continues, "...it away, Ernie! It's going to..." in the back shot, his mouth and jaw do not move at all, yet when he says, "...to be a..." his mouth and jaw move as usual. (00:09:20)

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Continuity mistake: Watch as Harry drops his shoe to the floor from the bed. You can see the shoe change angle between the shots. (00:15:20)

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