Charles Paul Alexander (September 25, 1889, Gloversville, New York – December 3, 1981) was an American entomologist who specialized in the Tipulidae family of craneflies.
Emil (the father) immigrated to the United States in 1873 and changed his surname from Schlandensky to Alexander.
Charles entered Cornell University in 1909, earning a Bachelor of Science in 1913 and a Ph.D. in 1918.
He then became professor of entomology at Massachusetts Agricultural College at Amherst.
Bibliography of Australian Entomology, 1775–1930, with biographical notes on authors and collectors, Royal Zoological Society of News South Wales (Sydney): viii + 380.