Susan Lynn Gordon (July 27, 1949 — December 11, 2011) was an American child actress who appeared in films and numerous television episodes, such as The Twilight Zone, My Three Sons, and The Donna Reed Show.

Gordon was born in Saint Paul, Minnesota, to film director Bert A. Gordon and his wife Flora (Lang). Susan began her career at the age of eight, replacing another young actress at the last moment in the 1958 film Attack of the Puppet People, directed by her father, who subsequently directed her in three more films — The Boy and the Pirates, Tormented (both 1960), and Mommy Died 1966, her last film. In 1959 she appeared and sang in the semi-biographical film Five Pennies, playing the daughter of musician, composer, and bandleader Red Nichols, who was portrayed by Danny Kaye.

On television, Gordon appeared in the Twilight Zone episode "The Fugitive" as Jenny, a child with a leg brace who befriends an alien. Other series included Gunsmoke, Alfred Hitchcock Presents, My Three Sons, The Danny Thomas Show, Route 66, Ben Casey, 77 Sunset Strip, and The Donna Reed Show. On November 27, 1959, Gordon appeared live on NBC in the broadcast of Miracle on 34th Street.