Jonathan Deininger Sauer (July 16, 1918 Ann Arbor, Michigan – May 25, 2008, Pacific Palisades, Los Angeles) was a botanist and plant geographer.
His academic career was interrupted by WW II when he was drafted into the U.S. Army Air Forces.
He married in 1946 and became a graduate student in botany, studying under Edgar Anderson at Washington University in St. Louis.
In 1959 he became a professor at U. W. Madison with a joint appointment in the departments of botany and geography.
[1] [2] In 1946 he married Hilda Sievers (1922–2019), whom he met when they both worked at the Pentagon.