The 15th Academy Awards was held in the Cocoanut Grove at The Ambassador Hotel in Los Angeles on March 4, 1943, honoring the films of 1942. The ceremony is most famous for the speech by Greer Garson; accepting the award for Best Actress, Garson spoke for nearly six minutes, considered to be the longest Oscars acceptance speech. A portion of the ceremony was broadcast by CBS Radio.

Mrs. Miniver is a 1942 American romantic war drama film directed by William Wyler, and starring Greer Garson and Walter Pidgeon. Inspired by the 1940 novel Mrs. Miniver by Jan Struther, it shows how the life of an unassuming British housewife in rural England is affected by World War II. Produced and distributed by Metro-Goldwyn-Mayer, its supporting cast includes Teresa Wright, May Whitty, Reginald Owen, Henry Travers, Richard Ney and Henry Wilcoxon.