Continuity mistake: On the subway while John and Cassian eyeball each other, from the front there's no-one in front of Cassian, just a guy in a hat off to the side. But from the back, another man appears between them.
Suggested correction: You can see the edge of that guy cut off on the edge of the shot he is there, that grey hair and that same jacket.
Continuity mistake: Mason is in shock after killing the first bad guy with the automatic weapon. Eddie tells him "Okay buddy, I'm on my way", leaning with the left arm against the counter - but in the next shot, turns out his hand is on his knee instead. (00:51:25)
Continuity mistake: When Jon talks to his ex in the pool, she wringing her hair in a ponytail in front of her left shoulder, several times, but in the reverse shot it's like it never happens, the hair every time is still and not being pulled or raised. (00:35:00)
Continuity mistake: The extras behind the guy Dom's cousin is indebted to keep changing in different shots.
Visible crew/equipment: When Baby is in the car that he stole after running away from the mall center and he crashes against the back of the pickup, you can see the cameraman and the crew member on his left reflected in the rear window.
Continuity mistake: At the start Edgar smashes his car up and kicks his window out and jumps out leaving a bit of glass in the window frame. However after the camera changes, the 2 bits of glass have disappeared. (00:01:05)
Continuity mistake: When Shawn first holds up the jerky to distract the guard dog, he's holding the torch in his right hand and the bag of jerky in his left. We cut to a wider shot and the items have instantly switched hands. (00:26:50)
Continuity mistake: Michele Riondino has just killed the snitch and is going after the witness, a Chinese woman. He holds her at gunpoint; she does not move, but in a shot she has hair in front of just her left shoulder, both shoulders in the next. (00:30:30)