Louis Delton Fancher (December 25, 1884 – March 2, 1944) was an American artist and illustrator, notable for his drawings that appeared in books, in magazines, and on propaganda posters during World War I.

He also created well-known propaganda and recruitment posters for the aviation section of the United States Army Signal Corps and the Committee on Public Information.

His illustrations for the latter featured the Packard "38" Runabout in Holland, the "38" Phaeton in Paris and the "48" touring car at the Grand Canyon.

In 1933, Fancher painted and produced a large map depicting the history of food production in Iowa, including details of specific crops and foodstuffs, for an exhibit operated by The Great Atlantic & Pacific Tea Company at the Century of Progress.

[4] The following year, he produced a series of posters depicting the details of retail food distribution during the growth of the United States; these were displayed in Great Atlantic & Pacific Tea Company grocery stores as a special exhibit for their 75th anniversary.