Dennis Hopper was born on May 17, 1936, in Dodge City, Kansas, the son of Marjorie Mae (July 12, 1917 – January 12, 2007) and James Millard Hopper (June 23, 1916 – August 7, 1982). He had Scottish ancestors. Hopper had two brothers, Marvin and David. After World War II, the family moved to Kansas City, Missouri, where the young Hopper attended Saturday art classes at the Kansas City Art Institute. At the age of 13, Hopper and his family moved to San Diego, where his mother worked as a lifeguard instructor and his father was a post office manager (Hopper has acknowledged, though, that his father was in the Office of Strategic Services, the precursor to the Central Intelligence Agency, in China with Mao Zedong). Hopper was voted most likely to succeed at Helix High School, where he was active in the drama club, speech and choir. It was there that he developed an interest in acting, studying at the Old Globe Theatre in San Diego, and the Actors Studio in New York City (he studied with Lee Strasberg for five years). Hopper struck up a friendship with actor Vincent Price, whose passion for art influenced Hopper's interest in art. He was especially fond of the plays of William Shakespeare.

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