Marion E. Hay (December 9, 1865 – November 21, 1933) was an American politician who served as the seventh governor of Washington from 1909 to 1913.

Born in Adams County, Wisconsin,[1] Hay attended the Bayless Commercial Business College in Dubuque, Iowa.

[1] He served the remainder of Cosgrove's unexpired term and left office in 1913.

[4] Defeated for election in 1912, he returned to manage his personal business interests and property holdings, and was chairman of the 12th District Regional Agricultural Credit Corporation.

Hay died of a heart attack at his office on November 21, 1933[1] and is interred at the mausoleum at Riverside Memorial Park, Spokane.