Homer LeRoy Shantz (1876–1958) was an American botanist and former president of the University of Arizona.

[2][3] He traveled widely, with an emphasis on the American West and Africa, and made documentary photographs wherever he went.

During this period, he worked with John E. Harrison Jr. in the acquisition of land for the creation of what is now called the Saguaro National Park[6] In 1936, he resigned after disagreements with the legislature and the Board of Regents.

[7] From 1936, he served as Chief of the Division of Wildlife Management of the U.S. Forest Service until he retired in 1944.

[2] He later worked with the Geography Branch of the Office of Naval Research to re-photograph many of the sites he had documented earlier in his career.