Arthur John "Jack" Lohwater (October 20, 1922 - June 10, 1982) was an American mathematician.
He obtained a Ph.D. in mathematics at University of Rochester (1951), on the dissertation The Boundary Values of a Class of Analytic Functions, advised by Wladimir Seidel.
[2] With Norman Steenrod and Sydney Gould he established important ties with Russian mathematicians, beginning with conferences in Moscow (1956, 58) and resulting in a dictionary.
Lohwater died after a long battle with lung cancer.
[3] He was married to the mathematician Marjorie White Lohwater (1925–2007).