Arthur Edward Demaray (February 16, 1887 – August 19, 1958) was an American administrator and, briefly, Director of the National Park Service.

A Washington, D.C., native, Demaray entered the government as a messenger at the age of 16, and worked his way through night school.

He became a draftsman with the U.S. Geological Survey, where he testified effectively at Congressional and budget hearings and his writings stimulated park interest.

Demaray moved to the National Park Service (NPS) when its headquarters was first staffed in 1917.

In the second spot during the tumultuous New Deal and the difficult wartime years (when he remained in Washington while the headquarters office relocated to Chicago), he proved an extremely effective administrator.