The Swarm is a 1978 American science fiction horror movie directed by Irwin Allen and stars Michael Caine, Katharine Ross, Richard Widmark, Richard Chamberlain, Olivia de Havilland, Ben Johnson, Lee Grant, José Ferrer, Patty Duke, Slim Pickens, Bradford Dillman, Fred MacMurray, Henry Fonda. It was distributed by Warner Bros..