John June Davis (October 9, 1885 – July 13, 1965) was an American professor of entomology who worked at Purdue University from 1920 to 1956.
He was also an institutional organizer, involved in growing and establishing advanced entomology education at the university and working on collaborations between agricultural industry and research.
In 1911 he joined the Bureau of Entomology of the United States Department of Agriculture working in Lafayette, Indiana, from 1911 to 1919 and then at Riverton, New Jersey.
Following the introduction of Chinese mantids in West Lafayette, he organized children's education programs to collect and spread the mantis egg masses.
[1][3] In 2017, a statue called The Entomologist, made by sculptor Susie Chisholm depicting Davis, Osmun, and Rachel Carson (in 1924, the three had met on the campus), was installed in Purdue University to celebrate 100 years of the department of entomology.