John Robert Kline

John Robert Kline (December 7, 1891 – May 2, 1955) was an American mathematician and educator.

Biography
One of three children born to Henry K. Kline and Emma M. Kline, he was Professor of mathematics at the University of Pennsylvania from 1920 to 1955. A Ph.D. student of Robert Lee Moore, he was a Guggenheim Fellow in 1925, later Chairman of the Department of Mathematics from 1933 to 1954, and Thomas A. Scott Professor of Mathematics from 1941 to 1955.

His doctoral students include Lida Barrett, Arthur Milgram, Athanasios Papoulis, Dudley Weldon Woodard, Leo Zippin, and William Waldron Schieffelin Claytor.

Kline was elected to the American Philosophical Society in 1941.