Which actor plays Herman J. Mankiewicz in Fincher's Mank?

Gary Oldman plays Herman J. Mankiewicz in Fincher’s Mank. The 2020 film follows the sharp-tongued Hollywood screenwriter during the creation of Citizen Kane, focusing on his battles with studio executives, producers, and Orson Welles over authorship of the screenplay.

Mankiewicz, often called “Mank,” was a celebrated screenwriter and critic who worked in Hollywood during the 1930s. He was known for his wit, drinking, and connections to powerful figures such as newspaper publisher William Randolph Hearst. These experiences helped shape the character of Charles Foster Kane.

Mank was directed by David Fincher from a screenplay written by his father, Jack Fincher. The film was shot in black and white and designed to resemble the visual and sound style of classic Hollywood cinema. Oldman’s performance earned him an Academy Award nomination for Best Actor.

A common mix-up is confusing Oldman’s role with Tom Burke, who plays Orson Welles. The film dramatizes the disputed question of how much credit Mankiewicz and Welles each deserved for Citizen Kane.