Continuity: After Sr. says "Let it go" as Indy is trying to get the grail, Indy is swinging and not being supported by the wall. The next camera angle shows him grasping the wall near his head. Switched back to Sr.'s view, he is again not holding the wall.

Continuity: In the scene in the temple after the two soldiers attempt to get past the first task, the first soldier is seen on his back holding his head beside him. When Indy attempts the first task, both dead soldiers are on their stomachs with no heads in sight.

Continuity: The Joneses take off in the Zeppeliner from Berlin. Shortly after takeoff they are over tall snowy mountains but there are no tall snowy mountains that close to Berlin.

Continuity: When the Zeppeliner turns back towards Berlin, it is over snow covered mountains. But when the Joneses escape in the biplane there is no sign of snow anywhere.

Continuity: Indy pours water from the grail into his father's mouth. Between two consecutive shots, the position of Indy's hand changes and the direction he pours changes 90 degrees.

Continuity: As Sallah pulls Dr. Jones senior off the tread of the tank, Indy lets go of his whip and turns towards the German colonel and they continue fighting face-to-face. You can see that Indy punches the colonel so that he loses his balance and stumbles backwards. A split second later, the colonel is standing behind Jones with his arm around Indy's neck. They did not have nearly enough time to so radically change positions.

Revealing: At the book signing in Berlin, the camera pans from right to left and the guard at the very end of the line of soldiers (to the left) has his left hand raised in military salute to Hitler. All the other soldiers have their right hands extended.

Continuity: When Indy is trying to hold Elsa and keep her from falling and she's trying to reach the Grail, you can see her hand coming out of her glove. In the first shot of her hand coming out, it comes almost all the way out. In the next two shots, her hand is about halfway out, then it slips out and she falls.

Continuity: When Indy and his father are being pursued by German soldiers on bikes, right after they break through the barrier, the barrier guard comes out of his post and waves the pursuing German soldiers to slow down in the background. In the next shot he's no longer there, and the barrier's quite far away, then in the following shot he's back, and Indy's not so far from the barrier again.

Continuity: In the scene where Indy & the protector of the Grail are in the boat about to be destroyed by the rotors, there are panels on the top of the boat that pop up and are destroyed when the boat is moving backwards into the rotors. In the next shot, they are intact, then in the next shot, they are destroyed again.

Continuity: The 109s that are animated are shaped like the original German fuel injected ones. The shots where it's a real plane show the modified one with a RR Merlin engine that gives it a weird square nose.

Other: When the Joneses are flying in the biplane, there is no wind at all. Their hats are not blown about by the wind as they should be in an open cockpit.

Revealing: Ths stunt man who saves Senior from the tank has a perfectly trimmed beard and a thinner face than Sallah's.

Continuity: The shape of the exploded canon barrel on the tank changes a lot in the different shots. Especially between the scene right after the explosion and the scene where Indy is hanging under the barrel.

Plot hole: In the tank scene, a German fires a bullet which hits the tank driver and he falls on to the controls, turning the tank. As almost everyone in the tank is dead/unconscious nobody would move the body so the tank should go round in circles.

Factual error: The film is set in 1938, yet the Jones' fly to Europe from America on a commercial airliner and attempt to leave Germany in a Zeppelin. Pan America's first commercial transatlantic airliner didn't take off until May of 1939, and commercial Zeppelin flights were suspended after the Hindenberg's crash in May of 1937.

Continuity: When we first see the knight guarding the Grail, his cloak is tied off with a braided rope, which hangs down on his right side. It stays this way until he says "You have chosen wisely," where the rope has somehow shifted to his left side. The rope goes back to normal when the knight waves goodbye at the end of the movie.

Continuity: When Indy meets Hitler, there is a shot over Indy's shoulder that shows his lips are slightly parted (relaxed). Cut to Indy's face and he closes his mouth tightly. In the very next shot, with no elapsed time, we see from Indy's shoulder again that Indy's mouth is relaxed as before.

Factual error: When Indy and his Dad are in Berlin, there is a big book burning going on. But the only book burning that was held in Berlin was May 10th in 1933 - 5 years before the Joneses visit it in search for the Holy Grail.

Continuity: During the boat chase/fight in Venice, the rear of Indy's boat gets shot up and starts smoking and spouting flames and the engine starts chopping. He leaps onto the pursuing boat, fights until that boat is destroyed in the rotors, then leaps with the Grail protector back onto his original boat with Elsa. The boat is now running perfectly.