Continuity mistake: Before she goes into labor Rosemary and Guy's alarm clock above their bed reads 9:30 throughout the scene, but when Dr. Sapirstein injects her with a sedative and she goes into labor the wrist watch that the man on the right of the screen is wearing gives another time which is 11:15. (01:57:15)????
Continuity mistake: In order to fool the witches Rosemary takes the pills that they give her and sticks them between a brick and the middle shelf of her head board. When we first see this spot the bricks are flush with the shelf but in the next shot the shelf has been moved out about three-quarters of an inch past the bricks. (02:03:50)????
Continuity mistake: After Rosemary calls up Elise Dunstan she hears something moving around in the apartment and turns her head to the right in order to see what it is. In the next shot when Guy and the others walk into in the room Rosemary's entire body is turned around looking at them. (01:56:30)????
Continuity mistake: Guy is lying down on the sofa as Rosemary shows him the necklace with the tannis root inside. His right ankle is leaning over the edge of the sofa right next to the lamp. Two shots later Guy says, "Well if you took it you ought to wear it" and the lamp has been moved a foot to the left of his ankle. (00:32:50)????