James Dalton Trumbo (1905 - 1976) was an American screenwriter and novelist.
As one of the Hollywood Ten, he refused to testify before the House Un-American Activities Committee (HUAC) in 1947 during the committee's investigation of Communist influences in the motion picture industry, and was blacklisted.
Trumbo won two Acdemy Awards while blacklisted; one was originally given to a “front” writer, and one was awarded to “Robert Rich,” a Trumbo pseudonym.
Today Trumbo is best remembered for his controversial novel Johnny Got His Gun.
Trumbo's SF writing was limited to a collaboration with Thomas N. Scortia on their novel The Endangered Species, and to the screenplay for the SF film From the Earth to the Moon (1958).