Henry Cantwell Wallace (1866–1924) was a United States farm leader. He served as the Secretary of Agriculture between 1921 and 1924. He was the father of Henry Agard Wallace. He was editor of Wallaces' Farmer 1916 - 1921. Son of "Uncle Henry", Henry C. (Harry) Wallace was born in Rock Island, Illinois, graduated from and was a professor of dairy science at Iowa State College. He farmed near Orient, Iowa, where his son Henry A. Wallace was born. Harry handled much of the daily details at Wallaces' Farmer and became editor when his father Uncle Henry died. Harry Wallace helped establish 4-H and Extension programs in Iowa, and helped start the Iowa Farm Bureau.

He served as the longtime president of the Cornbelt Meat Producers Association. Appointed Secretary of Agriculture by President Harding in 1921, Harry Wallace promoted programs for American farmers struggling against over-production and the collapse of farm prices following the first World War. His book, Our Debt and Duty to the Farmer, was published posthumously.

1866 births | 1924 deaths | United States Secretaries of Agriculture