Continuity: When the troll enters the girls' lavatory, in the wide shot as Hermione walks backwards towards the cubicles, the room becomes brighter from the storm. With this extra bright light it is simple to see that the wall between the 2nd & 3rd cubicles actually touches the floor, unlike the other cubicle walls. Yet, in the overhead shot as the troll's club slams into the cubicles, Hermione is lying under that very wall crawling away. Impossible!!

Continuity: In the scene where Professor Quirrell removes his headwrap to reveal the concealed Voldemort, Quirrell is obviously bald. However, if you carefully watch the scene with the troll, Quirell's sideburns are present after he shudders as the troll exhales, as they are in a couple of other shots.

Visible crew/equipment: As the troll begins to lift Harry with his huge club in the girls' lavatory, in the overhead shot as Harry hangs on to the edge of the 'real' club, at the bottom left of the screen the crew's blue equipment is perfectly visible. (Visible on DVD fullscreen.)

Continuity: As Hermione walks toward the troll, just before she asks, "Is it dead?" the long towel hanging from the rod beside the sinks is visibly straight. When Harry lifts his wand with troll booger/bogey, in the shot of him as he grimaces and groans, the towel on the rod is visible behind him and it's messy. Yet when McGonagall, Snape and Quirrell walk in, the long towel is straight again.

Visible crew/equipment: During the Quidditch match as the players ride their broomsticks, visible in quite a few shots are the two WIRES that are attached to the broom handle, between their legs, that extend down with a clamped loop that goes around their feet. In some shots the wires between their legs are edited, but the wire loops around their feet are perfectly visible, like in the following example. When the Slytherin score hits 10 onscreen, in the next shot, as Flint shouts, "Take that side," the wire is completely visible at his right foot under his cloak. Two examples where the entire wires are visible are, when Flint grabs the club and says, "Gimme that!" the wires are blatantly visible and he then proceeds to slam the Bludger into Wood, who falls. Next close-up of one of the twins, the wires are clearly visible before Flint starts to leap over him. (Don't confuse the cloak's long front ties for the wire.)

Visible crew/equipment: During the Quidditch match Harry's broomstick tries to shake him off, due to the spell. After Hermione tells Ron, "Leave it to me," in Harry's last close-up before he flips over, the seat that is attached to the broomstick, to make it more comfortable for Dan Radcliffe to sit on, is entirely visible. Glimpses of other seats can be had during the match as well.

Visible crew/equipment: At the Quidditch match, after Hermione sets Snape's cloak on fire and someone shouts, "Fire! You're on fire!" there is a close-up of Harry with his hands gripping the Nimbus 2000. In this shot, the wire rods which are attached/taped to the broomstick, near Harry's fingers, that lead under both of his red sleeves, are entirely visible.

Continuity: When Hagrid drags the Christmas tree into the castle, in the first shot there is no snow on his hair, although he has supposedly been outside for some time. When the camera angle changes his hair is now covered with snow.

Continuity: In the scene in the library's restricted section, Harry puts down his cloak and then his lamp. The lamp is several inches away from the cloak. When Filch enters Harry grabs the cloak and suddenly the lamp is now on top of the cloak, causing it to fall.

Visible crew/equipment: Harry, Ron and Hermione, run to Hagrid's hut to tell him that they know about the Stone and they knock on the door. As Hagrid opens the door in the first shot looking out, Harry stands behind his tape mark and Hermione and Ron visibly stand behind their shared black tape MARK on the step.

Continuity: In the scene where Harry, Ron and Hermione come with Filch to Hagrid to go into the dark forest, watch the lamp Hagrid sets down. Filch says something like "A sorry lot this, Hagrid". Then the shot cuts to Hagrid (look at the lamp) then to Filch again who says "Oh good god man, you're not still on about that bloody dragon, are you?" then to Hagrid again. The lamp changes position between these shots.

Continuity: When Harry Ron and Hermione run to see McGonagall, there is an hourglass, a large book and a candle all sitting directly on top of her desk. Their positions change, especially in the shot facing McGonagall, when she says, "I'm afraid Professor Dumbledore is not here...," not only is there is another small book next to the candle, the hourglass now sits on the large book.

Visible crew/equipment: After falling from the Devil's Snare, Harry tells Ron, "Lucky Hermione pays attention in Herbology." Then as Ron starts to walk toward Harry, there is a crew member's arm and hand gripping the back of Ron's shirt at the bottom! (Visible on DVD fullscreen.)

Visible crew/equipment: After entering the Key room Harry says, "They're not birds... I'll bet one of them fits that door," and as they reach the levitating broomstick at the bottom right corner of the screen the shadow of crew's equipment (probably a boom mic) moves on the floor. It is not a key's shadow.

Visible crew/equipment: In the Key room after Hermione asks, "What's this all about?" Ron takes his wand out and starts for the door. In the wide shot facing the door as he and Hermione pass to Harry's left the BAR attached to the underside of the broomstick bristles is visible. It is not visible in other shots.

Visible crew/equipment: Being chased by the flying keys, as Harry zips by on the broomstick he tosses the key, Hermione catches it and runs to the door. In the next shot, a close-up, as she tries to unlock the door, an electrical cable hangs down beside the column, that was not in the previous shots. There is also an electrical cable coming out from under the back of Hermione's sweater that is blatantly visible as well.

Visible crew/equipment: During the chess game when the queen drives her sword through Ron's knight, if you pause it just right you can clearly tell that it's a stunt double falling off the horse.

Revealing: At the end of the film, when Harry is leaving on the Hogwarts Express, and the overhead shot shows the train pulling away from the station you can clearly see that Hagrid is of normal height, as the train roof is much taller than he is.

Other: In the scene when Harry talks to the snake, the camera shows a close up of the snake, and it blinks. Snakes don't blink.