Jamake Highwater (born Jackie Marks, also known as Jay or J Marks; 14 February 1931 – June 3, 2001) was an American writer and journalist of Eastern European Jewish ancestry who mispresented himself as Cherokee. Marks was exposed as an imposter in 1984 by activist Hank Adams (Assiniboine) and reporter Jack Anderson in separate publications. Despite this, Marks continued to be widely perceived by the general public as Native American.