Chief Buffalo Child Long Lance (born Sylvester Clark Long; December 1, 1890 – March 20, 1932) was an African-American journalist, writer and film actor who, for a time, became internationally prominent as a spokesman for Native American causes. He published an autobiography, purportedly based on his experience as the son of a Blackfoot chief. He was the first presumed Native American admitted to the Explorers Club in New York City.

In 1929, Long entered the film world, starring as the lead protagonist of the 1930 silent film The Silent Enemy, a drama focusing on a famine and power struggle in a post-classical Ojibwe tribe. The film employed over 200 indigenous persons, including actors Chief Yellow Robe, Cheeka, Chief Awakanush, and Molly Spotted Elk, and strived to be an accurate representation of Native American history. Chief Yellow Robe, the central actor who portrayed the Chief and who likely served as a cultural advisor of the film, became suspicious of Long and alerted the studio legal advisor. Long could not explain his heritage to their satisfaction, and rumors began to circulate.