Proof is a 2005 American drama film directed by John Madden and starring Gwyneth Paltrow, Anthony Hopkins, Jake Gyllenhaal, and Hope Davis. The screenplay was written by Rebecca Miller and David Auburn and based on Auburn's Pulitzer Prize-winning play of the same name.

Gwyneth Kate Paltrow is an American actress and businesswoman. The daughter of filmmaker Bruce Paltrow and actress Blythe Danner, she established herself as a leading lady appearing in mainly mid-budget and period films during the 1990s and early 2000s, before transitioning to blockbusters and franchises. She is the recipient of various accolades, including an Academy Award, a Golden Globe Award, and a Primetime Emmy Award.