Past is a 1935 outdoor sculpture by Robert Ingersoll Aitken, located in front of the National Archives Building in Washington, D.C., in the United States. John Russell Pope served as the sculpture's architect and Edward H. Ratti served as its carver. The sculpture is made of Indiana limestone and measures approximately 20 x 8 x 12 feet, with a base approximately 12 x 12 x 15 feet. Past is a companion piece to Present, also located in front of the National Archives Building.