How many Oscar did transformers win?

Zero - Tansformers 2: Revenge of the Fallen (2009) was nominated for the Academy Award (Oscar) for Best Sound. It lost the award to The Hurt Locker.

Three: Best Supporting Actor, Cinematography and Sound.

Five. "Up" won Academy Awards for Best Animated Feature of 2009 and Best Original Score (Michael Giacchino). The Disney-Pixar film also was nominated for Best Picture, Best Original Screenplay and...

Four: Best Picture, Director, Adapted Screenplay and Editing.It won four: Best Picture of 2006, Best Director (Martin Scorsese), Best Adapted Screenplay and Best Film Editing.

None. It wasn't nominated for a single Oscar.