Mourning Becomes Electra is a 1947 American film by Dudley Nichols adapted from the 1931 Eugene O'Neill play of the same title. The film stars Rosalind Russell, Michael Redgrave, Raymond Massey, Katina Paxinou, Leo Genn and Kirk Douglas.
It was nominated for Academy Awards for Best Actor in a Leading Role (Michael Redgrave) and Best Actress in a Leading Role (Rosalind Russell). Originally released by RKO Radio Pictures at nearly three hours, it was eventually edited down to 105 minutes (losing more than an hour) after it performed poorly at the box office and won no Oscars. It has since been restored to its full length and shown on Turner Classic Movies.
An Oscar upset occurred in connection with the film. All who saw it had taken it for granted that Rosalind Russell would win for her performance as Lavinia, to the point that Russell actually began to rise from her seat just before the winner's name was called. However, it was Loretta Young, and not Russell, who was named Best Actress for her performance in The Farmer's Daughter.
The film recorded a loss of $2,310,000, making it one of RKO's biggest financial disasters.