Continuity mistake: Constantine is thrown out of a bar and onto the street. The sidewalk is very wide and there is a trashcan by a light pole close to the edge of the sidewalk by the street. In the next shot as Constantine is getting up, the sidewalk is suddenly smaller and the trashcan is right next to the building. (01:08:50)
Continuity mistake: When they head to the church, Chas trips over a large rock and almost spills the jugs of holy water. In the next shots, the rock he tripped over has vanished. (00:58:25)
Continuity mistake: After they find each other, Chas and Constantine are driving along and Chas asks is Constantine working for Beroul now, and is he crazy? He looks over to his right towards Constantine when he asks that, but in the next shot when he says never mind, suddenly he's facing forward watching the road again instantly. (00:35:50)
Continuity mistake: Constantine drives to where Beroul had teleported Chas, and Chas angrily gets into the car and slams the door shut. He does not put on his seatbelt and places his hands on the steering wheel before lowering his head a bit. It cuts to a close up before he turns to look at Constantine again, and suddenly he has his seatbelt on. (00:35:40)
Other mistake: Constantine is driving along a road and an big rig truck is heading for him head on. The truck honks and they both hit the brakes, stopping just a foot away from each other. But at the speed the truck was moving it could not have possibly stopped so quickly. It would have skidded into Constantine's car. (00:35:00)
Continuity mistake: After leaving Beroul's, Constantine is driving along a road weaving through traffic. There are cars beside and behind him, and he gets in the far left lane with no other road to his left. It's buildings and sidewalk. But suddenly in the next shot when a big rig is coming head on towards him, the cars around him vanish and there is now a whole other road to his left. (00:34:55)
Continuity mistake: Once Constantine and Chas make it to the address given to them by the demon, Constantine knocks on the door with the knocker ring. Between shots the ring suddenly becomes larger after he stops knocking. (00:26:00)
Continuity mistake: When the Nightmare Nurse is talking with Renee and looking out the window at the dark creatures that she can see, Renee responds and looks at her in the reflection of the window. When it cuts to a different angle showing her, the position of her head does not match her reflection. (00:17:40)
Continuity mistake: At the table when Constantine is talking with Chas, they mention him throwing up on his aunt at a wedding and Constantine says he thought she took it fine. He lowers his hand with his cigarette pointed down in the close up. But in the next angle it's suddenly pointed up. (00:05:35)
Continuity mistake: Constantine wakes up from a nightmare and sits up in his bed clutching his head. The window beside him has the blinds wide open with Big Ben seen through the window. But in the next shot suddenly the blinds are down covering a lot of the window. Also his bed posts change shapes. (00:03:10)
Continuity mistake: As the film starts, young Constantine is smoking a cigarette with a close up of his fingers. The camera angle changes and suddenly his fingers are in noticeably different positions. Most obvious is the finger nails are facing towards his left and then his right. (00:00:30)
Continuity mistake: After his "inner demons" attack Constantine and then reveal what they are, he has blood on the right side of his face and ear. His left side is mostly clear except a little bruise on his cheek. When it cuts to an angle further away, suddenly he has blood on his left cheek also. (00:04:15)
