Jesse David Jennings (1909–1997) was an American archaeologist and anthropologist. Based at the University of Utah, Jennings is best known for his work on desert west prehistory and his excavation of Danger Cave near Utah's Great Salt Lake. Considered an exacting academic scholar and author, he was known for conducting systematic excavations with order and cleanliness.
Jennings was born in Oklahoma City, Oklahoma on July 7, 1909 and grew up in New Mexico. He began his professional studies at the University of Chicago. In 1935, he married Jane Chase in Washington, D.C. The couple had two sons, David and Herbert. He served in World War II as a naval officer in the North Atlantic. Jennings died in his home in Siletz, Oregon, on August 13, 1997.
In 1929, Jennings began archaeological excavations in the Midwest and Southeast as a graduate student at the University of Chicago. Jennings took several positions with the National Park Service, including serving as the first superintendent of the Ocmulgee National Monument in Macon, Georgia. In 1938 he and his wife dug with Alfred V. Kidder at Kaminaljuyu, Guatemala. His Ph.D. dissertation in 1943 was based on the Guatemala excavations.
In 1948, Jennings left the NPS for the University of Utah, where he taught until his retirement in 1986. Upon arriving at Utah, Jennings drew on his past experience to initiate a state-wide archaeological survey of the poorly known region through extensive surveys and test excavations. During his career, he conducted research and trained students in sites in the Great Basin, the Glen Canyon of the Colorado River, throughout Utah, and in American Samoa.