Their Finest is a 2016 British war comedy-drama film, directed by Lone Scherfig, written by Gaby Chiappe, and based on the 2009 novel Their Finest Hour and a Half by Lissa Evans. The film stars Gemma Arterton, Sam Claflin, Bill Nighy, Jack Huston, Jake Lacy, Richard E. Grant, Henry Goodman, Rachael Stirling, Eddie Marsan, Helen McCrory, and Claudia Jessie. It tells the story of a British Ministry of Information film team making a morale-boosting film about the Dunkirk evacuation during the Battle of Britain and the London Blitz.

Principal photography began in early September 2015 in London. Their finest was screened at the 2016 Toronto International Film Festival, and was released in the UK on 21 April 2017 by Lionsgate.

The film is set during the time after Dunkirk, when the Battle of Britain is turning into the Blitz. The British government is desperately seeking to shore up the morale of the general population, and is pursuing a long strategy of getting the US to join the war and defeat Hitler. The Ministry of Information used artistic talent to pursue these ends.