Silas Wright Lamoreux or Lamoreaux (March 8, 1843 – August 5, 1909) was an American lawyer from Wisconsin who served as a member of the Wisconsin State Assembly and as the 28th Commissioner of the General Land Office of the United States.

[3][4][5] Lamoreux was elected as a Democratic member of the Wisconsin State Assembly from the 5th Dodge County district in 1871.

[3][4] He was appointed commissioner of the United States General Land Office by President Grover Cleveland (a Democrat), serving from 1893 to 1897.

[4][5] Lamoreux founded the Beaver Dam Malleable Iron Works,[4] which employed 750 men at the time of his death.

[3][4] He died of blood poisoning in Beaver Dam on August 5, 1909, after a long history of diabetes.