Who wrote the screenplay for Fincher's The Social Network?

Aaron Sorkin wrote the screenplay for David Fincher's The Social Network.

The 2010 film dramatizes the founding of Facebook and was adapted from Ben Mezrich's 2009 book The Accidental Billionaires. Sorkin shaped that material into a fast, confrontational script built around depositions, flashbacks, and competing accounts of how Facebook began.

The screenplay earned Sorkin the Academy Award for Best Adapted Screenplay, recognizing its transformation of a recent, complicated business story into a character-driven drama. The dialogue is highly stylized, so the film is not a verbatim historical record.

A common mix-up is confusing Sorkin with David Fincher, who directed the movie, or with Ben Mezrich, whose book supplied the source material. Sorkin wrote the screenplay; Fincher translated it to the screen; Mezrich wrote the nonfiction book behind it.