Director Jennifer Kent holds the rights to the film. When asked if there would be a sequel, she said, "I will never allow any sequel to be made, because it's not that kind of film. I don't care how much I'm offered, it's just not going to happen."
The movie had a campaign where you could buy a copy of the hand-created "The Babadook Pop-Up Book" for 80 dollars. The first 2,000 copies are numbered and signed by the director, Jennifer Kent. The book contains pop-up pictures, as well as additional pages not seen in the movie. The campaign was only open for a limited amount in which roughly 9,500 books were sold.
When asked where the idea for The Babadook (2014) came from, director Jennifer Kent said, "I have a friend who's a single mother, whose son was traumatized by this monster figure that he thought he saw everywhere in the house. So I thought, 'What if this thing was real, on some level?' So I made Monster (2005) [a short film] about that idea. But I couldn't leave it alone. I kept coming back to it. And that led to The Babadook." She has also stated that Amelia suffers from the unprocessed trauma of witnessing a horrible death, and that it is up to the audience to interpret whether the Babadook is supernatural or psychological in nature.
In Hebrew, ba-badook means "he is coming for sure."
William Friedkin, director of The Exorcist (1973), said of this film, "I've never seen a more terrifying film than The Babadook."