Continuity mistake: In the early part when Peter Fonda and Dennis Hopper are getting their choppers ready, the film clip was reversed. You can tell because the American flag on Fonda's jacket has the stars on the right shoulder, not the left like the rest of the movie. (00:06:10)
Continuity mistake: When Blofeld gets thrown from the bobsleigh and gets his neck caught between the branches of a tree, he is caught under his arms in the long-distance shot.
Continuity mistake: In the bicycle riding scene where Butch lets Etta ride on the handlebars, you can see her feet are resting on some sort of pegs protruding from the axle on each side of the bicycle wheel. When she is not riding, the pegs are not there.
Continuity mistake: At the dinner scene when Mattie Ross is trying to obtain Rooster Cogburn's services, Rooster clears the table, and in the next scene he re-clears the table by pushing everything aside to play cards with Chin Lee.
Continuity mistake: On board ship in the captain's cabin, he is lying on a bunk. A shot from behind him, through a window shows his shirt or pyjamas to be undone showing bare chest, then the shot changes to in front of him and and the shirt/pyjamas are done up, showing no chest. We see this several times.
Continuity mistake: In the scene where the shipwreck survivors are being rescued by Captain Nemo's divers, Nanette Newman is barefoot as she is carried into the submarine. In the shot immediately following, she is being carried into the sub by a diver and she is wearing full length black boots.
Continuity mistake: When Hercules overturns the cab, the light suddenly changes from daylight to dusk.