- Continuity: Looking into the mirror, the ghosts prove that they have no reflections, but are later reflected in the attic windows.
- Continuity: Otho opens a can of spray-paint and hands it to Delia, who opens it again.
- Continuity: Otho's shoes when he is spray-painting the walls in the house.
- Continuity: In the attic, just before he draws the door, the book that Adam is holding is repeatedly open/closed between shots.
- Continuity: In the attic Adam carefully chalks in the missing door handle but as the door then starts to open it is missing again.
- Continuity: The post in the attic moves between shots (presumably to keep the hinges on the drawn door covered).
- Incorrectly regarded as goofs: In the first dinner scene, Lydia can be seen to push her chair back to leave; she doesn't just disappear when everyone starts singing.
- Continuity: When Otho summons the Maitlands into their wedding clothes, they start to age rapidly. Their age isn't always consistent in the following scenes.
- Factual errors: The photograph Lydia takes of the Maitlands would not develop that quickly; they take at least 45 seconds.
- Continuity: When Beetlejuice switches his number with the voodoo guy he drops his number on his lap and it falls between his legs. Then when he picks it up it's to the left of his legs.
- Continuity: After Adam finishes drawing the door on the brick wall, he lays the chalk on the table next to the handbook. When Lydia comes into the room and picks up the chalk, it is on top of the handbook
- Revealing mistakes: When the Maitlands are digging through cardboard inside the model to find Beetlejuice, one of the pieces of cardboard has "FRAGILE" written on it. If the model is a miniature you would not be able to see the whole of the word FRAGILE on one tiny piece.
- Revealing mistakes: When Adam draws the door you can see a faint outline from a previous take of the door-drawing scene.
- Crew or equipment visible: As the Maitlands are climbing the steps of the remodeled house with Juno, the cast's tape "mark" is visible on the step.
- Revealing mistakes: When Betelgeuse rises from his grave and flies after the Maitlands, the wires supporting him are visible.
- Continuity: When Beetlejuice and Lydia are getting married, you can see that he's not wearing any socks as he tries to stomp on Adam's teeth. When he's shown later in the waiting room, he is wearing socks.
- Continuity: When the Maitlands are in model of the cemetery, there is fake green grass. When they return to full size and look down at the model, the cemetery is covered with sand, not fake grass.
- Continuity: When Beetlejuice becomes a snake hand-railing, he reaches for Charles' shoes. When you look at his shoes, the tops are red. But when he gets pulled out of the room, his shoes are completely black.
- Continuity: When Delia writes "Mauve" on the wall, the M is completely formed, but in the next shot there's a little bit missing from the M.
- Continuity: When Juno is in the house smoking, her cigarette changes size repeatedly throughout the scene. Also the smoke doesn't always come out of the slit in her throat.
- Continuity: Adam draws a door in the attic with two sides and a top. In the next cut, the door has only one side and a top.
- Continuity: In the first scene in the attic, after Adam gives Barbara the roll of wallpaper as a gift, it keeps changing from just partially unwrapped to totally unwrapped and back again.
- Continuity: When the Maitlands are scrambling to get back to the attic door and away from the sandworm, a far shot shows the white door hovering in space some distance above the sand. But in the next closeup, the Maitlands are almost even with the door while standing.
- Revealing mistakes: When the Maitlands car drops into the river after the crash, the vehicle has no side or back windows (probably to make it sink a lot quicker).
- Continuity: When Bettlejuice turns himself into a snake from the stairway railing, in one shot the railing is gone, in another the railing is back even though he's still the snake. Then in another shot the railing is gone again. Until finally he isn't the snake anymore.
- Continuity: When Adam and Barbara first get to their house after dying, we can see their reflection in a mirror in a hallway to the left of them. A couple shots after that we see that they are not supposed to have reflections.
- Continuity: When Charles is looking through his bird book, when he first opens the cover his ring is one solid gold band. Then the cameras turn away from his hand. Then when you see his hand a couple seconds later his ring has changed drastically.
- Revealing mistakes: When Beetlejuice has his first actual conversation with Lydia, a cockroach scampers by and he eats it. The cockroach is roughly the size of a hamburger in comparison to Beetlejuice, yet he is already miniaturized.
- Continuity: Even though Adam and Barbara attempt to scare the Deetzes by altering their appearances only to find that the living cannot normally see the deceased, later when they show Juno how they plan on scaring the family again, they go back to altering their bodies which Juno finds no flaw in.
- Continuity: During the dinner scenes with Goulet and Cavett the "shrimp" in the cocktails keep changing position.
- Errors made by characters (possibly deliberate errors by the filmmakers): In the scene where Otho and Delia are discussing colors to paint the walls with, Otho calls vermilion a blue-green, but vermilion is actually a reddish orange.
- Continuity: During the scene where Lydia tries to open the attic door with the key, you see her on the outside letting go of the handle. As Adam picks up the screwdriver to poke the key back out you can still see the handle shaking as if she is trying to turn it.
>>> WARNING: Here Be Spoilers <<<
Goofs below here contain information that may give away important plot points. You may not want to read any further if you've not already seen this title.
- Revealing mistakes: SPOILER: After Beetle Juice gets eaten by the sandworm during his and Lydia's wedding, the priest disappears but he can be seen hiding in the dark in the fireplace.
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