Lukas Foss (August 15, 1922 – February 1, 2009) was a German-American composer, pianist, and conductor.
Born as Lukas Fuchs in Berlin, Germany in 1922, Foss was soon recognized as a child prodigy. He began piano and theory lessons with Julius Goldstein [Herford] in Berlin at the age of six. His parents were Hilde (Schindler) and the philosopher and scholar Martin Fuchs. He moved with his family to Paris in 1933, where he studied piano with Lazare Lévy, composition with Noël Gallon, orchestration with Felix Wolfes, and flute with Louis Moyse. In 1937 he moved with his parents and brother to the United States, where his father (on advice from the Quakers who had taken the family in upon arrival in Philadelphia) changed the family name to Foss. He studied at the Curtis Institute of Music in Philadelphia, with Isabelle Vengerova (piano), Rosario Scalero (composition) and Fritz Reiner (conducting).
At Curtis, Foss began a lifelong friendship with classmate Leonard Bernstein, who later described Foss as an "authentic genius." In 1961 Bernstein would conduct the premiere of Foss's Time Cycle, while Foss would conduct the premiere of Bernstein's Symphonic Dances from West Side Story.
Foss also studied with Sergei Koussevitzky during the summers from 1939 to 1943 at the Berkshire Music Center (now known as the Tanglewood Music Center) and, as a special student, composition with Paul Hindemith at Yale University from 1939 to 1940. He became an American citizen in 1942.