Edwin Fremont Ladd (December 13, 1859 – June 22, 1925) was an American chemist, academic administrator, and politician.

While serving in the United States Senate, he was chairman of the Committee on Public Roads and Surveys during the 68th Congress.

He was a chemist of the New York State Experiment Station in Geneva, New York from 1884 to 1890 and dean of the school of chemistry and pharmacy and professor of chemistry at the North Dakota Agricultural College, Fargo, North Dakota.

He was administrator of the State's pure-food laws, for which he actively crusaded from 1902 to 1921; he was also president of the North Dakota Agricultural College from 1916 to 1921.

Interment was in Glenwood Cemetery, Washington, D.C.[1] Pound sign (#) denotes interim president