Continuity mistake: The scene in the film that follows Berstein's interview with the book-keeper, where he is getting all his notes on various bits of paper out of his pockets: there is a Life magazine on the desk in front of Woodward's typewriter. At the start of the shot where Berstein says: "Mitchell, she said something about Mitchell." the mag has gone, then it reappears and disappears randomly in the subsequent shots in this scene.
Continuity mistake: In the second Book-keeper scene, the level of liquid in Jane Alexander's jug fluctuates from shot to shot.
Continuity mistake: When Bernstein is talking with Colson's assistant, her hair is falling in front of her left shoulder, in the following close up shot it's behind.
Continuity mistake: When they visit Sloan for the first time, Dustin Hoffman sits on the left side of the sofa up straight, then he's shown lying in the middle of the sofa, then sitting right up on the left corner again.
Continuity mistake: On the 2 occasions when Woodward's car comes down the ramp from the Paper's parking lot (with the same car double-parked in the lot), as they turn into the street, the same pedestrians are there both times.
Continuity mistake: While in the foreground of Nixon's celebration on the television, Redford in the background has 3 jumpcuts while he's typing.