Although many movies based on books were nominated for Oscars this year, only three won with a total of five awards between them:
Darkest Hour, based on the book Darkest Hour: How Churchill Brought England Back from the Brink by Anthony McCarten: Two wins: Best Actor (Gary Oldman) and Best Makeup & Hairstyling
Call Me by Your Name, adapted from André Aciman's novel: Best Writing Adapted Screenplay (James Ivory).
Blade Runner 2049, based on characters from the novel Do Androids Dream of Electric Sheep? by Philip K. Dick: Two wins: Best Cinematography & Best Visual Effects
Darkest Hour, based on the book Darkest Hour: How Churchill Brought England Back from the Brink by Anthony McCarten: Two wins: Best Actor (Gary Oldman) and Best Makeup & Hairstyling
Call Me by Your Name, adapted from André Aciman's novel: Best Writing Adapted Screenplay (James Ivory).
Blade Runner 2049, based on characters from the novel Do Androids Dream of Electric Sheep? by Philip K. Dick: Two wins: Best Cinematography & Best Visual Effects