Yes, Michael Caine is in the film Oppenheimer. He plays the role of Robert Oppenheimer, the American theoretical physicist who is often referred to as the father of the atomic bomb. The film chronicles Oppenheimer's life, from his early days as a student at Cambridge University to his work on the Manhattan Project during World War II. Caine gives a commanding performance as Oppenheimer, bringing to life one of the most complex and controversial figures of the 20th century.