Continuity mistake: In the first shots of the golf course, you see Goldfinger's Rolls parked to the far left of the main building, with Bond's car in the lot in the background. When the scene changes to the inside of the clubhouse store, the Rolls is now very close to the front of the store. At the end of the golf game, the Rolls is back to the left of the main building, and as the camera pans back, you can see that the store is to the far right of the main building.
Revealing mistake: When Mr Witt rides out of the Zulu camp in a 2 horse cart at the beginning of the movie, just before it exits, you can see it's a stunt double at the reins.
Continuity mistake: After the Baxter/Rojo dinner, the background changes from nightime to daytime at the cemetery, then back to nightime again when Clint kidnaps Mirasol.
Continuity mistake: The three enter a small cantina and start a fight and fire. The place is huge on the inside, with stairs to a second floor. From the outside it's just a small shack.