Deliberate mistake: When the ship crashes into the dock, all of the scenes leading up to the crash and after it show a clear view across the harbor as we can see lights and land on the other side. It's not until the ship is about to crash that a thick and dense fog appears and disappears within a minute to mask the ship to create a more dramatic effect.
Visible crew/equipment: When the T-Rex is running rampant in the streets, we see a guy running away from it. He tries to run into a video store, and the shot is from inside the video store. Right before that guy gets eaten by the Rex, he runs to the door to try to open it. And when this happens, you can see the reflection of the cameraman in the glass on the door walking towards it. (01:48:35)
Visible crew/equipment: When Sarah and Nick return to the trailer with the baby T-rex, there is a shot of Nick carrying the rex towards the operating table. Look between the baby rex's legs - there are a series of wires leading from a opening in the animatronic dinosaur's belly to a bulky device (presumably a battery pack) in the actor's pocket. Once you know where to look for the wires, you will notice them in many other shots in the film when various actors are holding the baby rex. (00:46:40)
Visible crew/equipment: When Ian is talking to John in the bedroom you can see a mirror. After John tells him about the project, the camera moves to the bed and there is a reflection of blue jeans, probably the cameraman's. (00:11:40)
Continuity mistake: When they're in the shack, and the raptors are making the walls shake, the lights wire guard falls off the wall and lands in front of the door. We then see a closeup of the raptors starting to dig under the door, there's no sign of the light guard. We then cut back to a wider shot of the door, and the light wire guard falls off again. Eventually it shows a closeup of the light wire guard AGAIN falling off. (01:30:10)
Continuity mistake: Near the end of the film, when Drs. Malcom and Harding are looking for the baby T. Rex in San Diego they arrive at the new InGen Jurassic Park. The car brakes hard, skids a little pulling a trailing cable for a portable light. The lamp falls. When they get back into the car with the baby T. Rex, to use it to entice the adult back to the ship, the lamp is standing again. (01:46:52)
Continuity mistake: When the second INGEN team is rolling through the open field and you first see Rolland talking to Peter about not setting up camp on the game trail, if you look carefully in the shot looking at Peter they are actually on a paved road instead of open field. Split second mistake. (00:32:55)
Continuity mistake: When Jeff Goldblum is trapped in the car with the raptor outside, the raptor bumps into the window, cracking it. There's no hole in the centre of the crack in the shot of the raptor, but when we see a shot of Jeff Goldblum a second later, there's suddenly a hole in the window. (01:30:05)
Continuity mistake: When Dieter Stark is about to taze the dinosaur, the guy with the long beard approaches him, telling him what it is. As the bearded man says "They're presumed to be scavengers, like jackals", Stark's taser is closed mostly inwards. In the next shot, the taser is suddenly extended, opened out.