Revealing mistake: When the CIA guys are following Odd Job to the airport in "Kentucky" there are several indicators that show they are in Florida. One is a big sign that says Opa Locka, which is north Miami.
Plot hole: After Pussy Gallore's airplanes spray "Delta-9" onto Fort Knox and the soldiers fake the effects, why does the army let Goldfinger and his nuclear device so far into Fort Knox? Wouldn't it be much safer to intercept him somewhere at the fence? He would be surrounded by thousand of soldiers either way, but without having the opportunity to plant his nuclear device in the building. The army even awaits the signals that the device is armed.
Revealing mistake: Bond's unconscious body falling out of the car at the end of the car chase is obviously sped up.
Continuity mistake: After Bond has wrecked Tilly Masterson's car, he takes her to a gas station. At the gas station, there is a orange camping tent visible in the background, When Bond leaves the gas station, the tent is suddenly gone.
Continuity mistake: The Falcon Odd Job is driving with the crushed Lincoln has whitewall tires when leaving the scrap yard but when he returns to the farm it has blackwall tires.
Continuity mistake: When the head of the statue falls on the ground after being decapitated by Oddjob's bowler hat, the head is now bright white and no longer matches the colour of the original marble.
Continuity mistake: When Colonel Smithers says "That's not quite fair" during the dinner sequence with Bond and M, the position of Smithers' hand/cigar jumps between shots.
Continuity mistake: When Bond is talking to his contact in the bar after the heroin plant explosion, look in the mirror behind him and you can see Bonita the dancer talking to some other men in the middle of the room. But in the next shot Bonita is on her own walking up the stairs, and the men are no longer in sight.