Harry D. Wilson was a Democratic politician from Tangipahoa Parish, one of the Florida Parishes of southeastern Louisiana, who served from 1916 until his death as the Louisiana Commissioner of Agriculture and Forestry. He was the father of the humorist and chef Justin E. Wilson.

Tangipahoa Parish is a parish located on the southeastern border of the U.S. state of Louisiana. As of the 2020 census, the population was 133,157. The parish seat is Amite City, while the largest city is Hammond. Southeastern Louisiana University is located in Hammond. Lake Pontchartrain borders the southeastern side of the parish.