Thirty Seconds Over Tokyo is a 1944 American war film produced by Metro-Goldwyn-Mayer. The screenplay by Dalton Trumbo is based on the 1943 book of the same name by Captain Ted W. Lawson. Lawson was a pilot on the historic Doolittle Raid, America's first retaliatory air strike against Japan, four months after the December 7, 1941, Japanese attack on Pearl Harbor. The raid was planned, led by, and named after United States Army Air Forces Lieutenant Colonel James Doolittle, who was promoted two ranks, to Brigadier General, the day after the raid.

Sam Zimbalist was the film's producer and Mervyn LeRoy directed. The picture stars Van Johnson as Lawson; Phyllis Thaxter as his wife, Ellen; Robert Walker as Corporal David Thatcher; Robert Mitchum as Lieutenant Bob Gray; and Spencer Tracy as Lieutenant Colonel—and soon General— Jimmy Doolittle.

Tracy's appearance in the film is more in the nature of a guest star; he receives special billing rather than his usual top billing and has considerably less screen time than star Van Johnson.

In the book, Lawson gives an eyewitness account of the intensive training, the mission, and the aftermath as experienced by his crew and by others who flew the mission on April 18, 1942. Lawson piloted "The Ruptured Duck", the seventh of 16 B-25s to take off from the aircraft carrier USS Hornet. The film depicted the raid accurately and used actual wartime footage of the bombers.