John David Love (17 April 1913 – 23 August 2002) was an American field geologist and specialist in Rocky Mountain geology who worked for the United States Geological Survey (USGS) from 1942 to 1987. He was only the second person in American history to complete two separate geologic maps of an entire region as the senior author (Wyoming 1955 and Wyoming 1985) and was the first winner of the Legendary Geoscientist award from the American Geological Institute.
Love was born at his parents' ranch near Riverton, Wyoming. He earned his bachelor's and master's degrees from the University of Wyoming and received his Ph.D. in geology from Yale University in 1938. As a doctoral student, Love's family doctor, Francis Smith, M.D. told him he'd met up again with the outlaw Butch Cassidy after Cassidy was supposed to have died in a shootout. The doctor said he had seen evidence of a bullet wound repair he did on the outlaw in the past. 
- McPhee, John. Annals of the Former World. Farrar, Straus and Giroux, 1998, p. 379
- Bartlett, Kristina. "A 'Legendary Geoscientist'", Geotimes, March 2000.
- McPhee, John. Annals of the Former World. 1998. ISBN 0-374-10520-0. p. 358
- Raymond E. Langden, Geology and geochemistry of the Highland uranium deposit, Wyoming Geological Association Earth Science Bulletin, Dec. 1973, p.41-48.
- Bartlett, Kristina. "In Memoriam: J. David Love", Geotimes, August 2002.
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