David Reynolds, FBA is a British historian. He is Emeritus Professor of International History at Cambridge University and a Fellow of Christ's College, Cambridge.

Reynolds has made thirteen documentaries on 20th-century history for the BBC, most recently the three-part BBC Two series "Long Shadow", based on his award-winning book about the legacies and memory of 1914–18 and a trilogy of films about the Big Three allies in the Second World War: "World War Two: 1941 and the Man of Steel", "World War Two: 1942 and Hitler's Soft Underbelly" and "World War Two: 1945 and the Wheelchair President". All these films have been directed by Russell Barnes.

Reynolds was also the writer and presenter of the award-winning ninety-part series "America, Empire of Liberty", broadcast on BBC Radio 4.