Continuity mistake: Minnie and her, "good friend, Laura-Louise" come to the door while Rosemary is reading a book on the sofa. Rosemary puts the book down on the sofa and when she returns it moves about a foot to the right of where it originally was placed. The pillow on the right of the sofa has also been moved. (00:31:05)????
Continuity mistake: Rosemary puts a record on her turntable and we see a yellow garbage pail in front of a yellow high chair in the kitchen. After Minnie and Laura-Louise walk into the living room, Rosemary walks over to turn the record player off and we see that the yellow garbage pail is gone. (00:30:30)????
Continuity mistake: Roman walks back to the bar after he spills the vodka blush on the carpet. There's a typewriter on a movable desk, to right of his easy chair, that has been moved since Rosemary and Guy walked into the apartment. The tip-off is the design on the carpet underneath the easy chair. (00:25:25)????
Continuity mistake: When the building manager opens the door to the apartment we see three lights down the hall, one lamp dead center and two nightlights one on the left and one on the right. In the next shot the nightlight on the right is turned off. Later when they walk out of the kitchen it's back on again. (00:03:55)????
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)????