Night at the Museum: Battle of the Smithsonian (2009)

Continuity mistake: When Abe Lincoln picks up Larry the tablet is missing only to return after he sets him down.

Continuity mistake: When Larry opens the octopus on Kahmunrah's men, the tablet disappears from Kahmunrah's arm several times before it is knocked out of it by the octopus.

Continuity mistake: When Custer is explaining how they will yell "Attack!" before attacking and Sacajawea questions the veracity of this plan, she is first in front of the caveman, etc. (with her back to the door of the box-crate) and then with no one behind her (with her back to the side of the box-crate).

MovieFan612 ★

Continuity mistake: When Custer slams his head, the sidecar is seen driving past several boxes, far away, but a couple shots later show it way behind, only a few meters from Custer.

Sacha ★

Continuity mistake: When the Roman Emperor is talking while standing on the crate, the objects behind and the position of the styrofoam differs between the close and wide shots.

Sacha ★

Continuity mistake: When Sacagawea wakes up from her shipping container, the styrofoam popcorn comes out everywhere as she gets up. But moments before when it shows her being put into the box, there is no styrofoam, rather she's packed in with hay.

Quantom X ★

Continuity mistake: On his horse, Teddy Roosevelt greets Larry and extends his hand as Larry enters the scene and extends his. A quick cut to Teddy's point of view and Larry walks up and extends his hand again.

Scott215

Continuity mistake: In the conclusion of the Brandon scene, as Larry is leaving, Brandon is shown in the background trying out the flashlight moves Larry had just done. As he does this, Brandon is walking toward the left in this shot, just beyond the Kahmunrah gate exhibit sign. The next shot is of Larry and the stolen guard pass. When they flash back to Brandon, he is walking in the same direction, but has not yet passed the sign. The order of the shots was simply mixed up.