Greyhound is a 2020 American war film directed by Aaron Schneider and starring Tom Hanks, who also wrote the screenplay. The film is based on the 1955 novel The Good Shepherd by C. S. Forester, and follows a US Navy commander on his first assignment commanding a multi-national escort destroyer group of four, defending an Allied convoy from U-boats during the Battle of the Atlantic. The film also stars Stephen Graham, Rob Morgan, and Elisabeth Shue.

Greyhound was initially scheduled for theatrical release in the United States on June 12, 2020, by Sony Pictures Releasing. The release was delayed indefinitely and then canceled because of widespread disruption and shutdowns from the COVID-19 pandemic. Sony sold the distribution rights to Apple TV+, which released the film digitally on July 10, 2020. It received positive reviews from critics, with praise for the action sequences and effective use of its 90-minute runtime. At the 93rd Academy Awards, the film earned a nomination for Best Sound.