Audio problem: During the opening overture, right when the orchestra starts "Maria", you can hear someone sneeze in the background. It's easier to hear on the soundtrack but you still can hear it in the movie.

Continuity: In the fighting scene between the "Jets" and the "Sharks" towards the beginning, when Bernardo cuts Baby-Jon on the cheek, the cut clearly switches from one cheek to the other between the time of him being cut, to when speaking to the police officers.

Continuity: In the prologue, when the Jets are talking about Tony, Ice goes, "Man, remember them fists the day we clobbered the Emeralds." you can see A-Rab with his arms crossed. In the next shot they're uncrossed and he crosses them.

Continuity: Near the end of the movie, when Maria (Natalie Wood) is kneeling over Tony's (Richard Beymer) dead body, watch the cross around her neck. first it's sort of tucked into the top of her dress, then it is on the outside. it goes back and forth several times.

Continuity: When Maria is hitting Tony while saying "Killer," her hair is across her left cheek. In the next shot, it is completely away from her face.

Other: During "Cool," there's a shot where they're doing a sort of knee turn, and you can see Tucker Smith in the background spinning too many times (you can see him start to stick out his arms to stop himself).

Continuity: In the scene right before "cool" when the two girls are crying, when they enter the garage their clothes are different.

Other: When Nardo is piercing John's ear, it's obviously just him and the Sharks, but then in the shot from above, you can see all the Jets running to the rescue. Also, Ice is already there, throwing a Shark off of John.

Continuity: While Maria sings "I feel pretty", she leaves the pink cloth next to the edge of a table. When the angle changes its position differs.

Deliberate "mistake": The knives at the rumble bend EVERY time they move.

Continuity: During the rumble, Riff slashes at Nardo's shirt with his knife and he spins away, but you can't see any tear in his shirt. Then in the next shot, when Riff is running toward him again there's a noticeable cut in his shirt (on the back).

Other: In the prologue, after Riff stands up and signals to the other Jets to follow him, they all stand up, then in the next shot you can see Baby John stand up again.

Continuity: In the playground, when the Jets stand up, the guy with the violet t-shirt stands up twice.

Continuity: When Bernardo catches the basketball, the Jets are divided on two separate groups. Half a second later the next angle shows a closed single group.

Continuity: During the song "I Feel Pretty," Maria throws a fan up into the air but it never comes back down.

Continuity: In the "Dance at the Gym" scene, while everyone is doing a pelvic swivel with their partners, Riffs arm is around Graziella's waist. In the next shot, his arm is down.

Continuity: In the begining, when the Jets are snapping their fingers, the guy with the blue t-shirt has his arm against the fence. In the next shot he doesn't.

Continuity: The blonde guys snapping fingers, one with a violet t-shirt and the other with a red shirt, stand close to each other, but half a second later stand further apart.

Continuity: In the beginning, an overview shot of the playground and the Jets is shown, the movie then cuts to a closeup of Tony snapping his fingers. In the closeup, there is a boy riding his bike past Tony that was no where to be seen in the previous shot from above.

Continuity: Toward the end of the movie when Doc slaps Tony, Tony grabs his face. Then they show a behind shot of Tony and you can see his hand moving slowly away from his face. But when they show a front shot of Tony his hand is back on his face.