There are roughly 9 movies nominated this year for an Oscar based on or inspired by a book, with 5 being in the Best Picture category. Obviously, all of the nominees in Best Adapted Screenplay are all based on books, though it’s a surprising amount outside of their usual category.
The movies nominated based on books are: Room, Brooklyn, Carol, The Martian, The Revenant, The Danish Girl, Steve Jobs, and Embrace of a Serpent.