Frederick Wilson Popenoe (March 9, 1892 – June 20, 1975) was an American Department of Agriculture employee and plant explorer. From 1916 to 1924, Popenoe explored Latin America to look for new strains of avocados. He reported his adventures to the National Geographic Society. He went to work for the U.S. Department of Agriculture in 1913 and became the chief agronomist of the United Fruit Company in 1925.