Warren Upham (8 March 1850 – 29 January 1934) was a geologist, archaeologist, and librarian who is best known for his studies of glacial Lake Agassiz. Upham worked as a geologist in New Hampshire before moving in 1879 to Minnesota to study the resources and glacial geology of that state. Upham's first major report on Lake Agassiz was published in 1890 by the Geological Survey of Canada, but the main product of his many years of study ("The Glacial Lake Agassiz") was published in 1895 as Monograph 25 of the U.S. Geological Survey's monograph series.
Upham graduated from Dartmouth College in 1871 and worked under Minnesota state geologist Newton H. Winchell. The Minnesota Historical Society published his landmark 735-page volume on place name origins, Minnesota Geographic Names: Their Origin and Historic Significance in 1920.
- Works by or about Warren Upham at Internet Archive
- Upham, Warren (1896). "The Glacial Lake Agassiz". Monographs of the United States Geological Survey. United States Geological Survey/University of North Dakota. XXV. Retrieved 16 April 2009.
- Works by or about Warren Upham in libraries (WorldCat catalog)