Paul Oskar Kristeller (May 22, 1905 in Berlin – June 7, 1999 in New York, United States) was a scholar of Renaissance humanism.
He was last active as Professor Emeritus of Philosophy at Columbia University in New York, where he mentored both Irving Louis Horowitz and A. James Gregor.
[citation needed] During his university years he studied with Werner Jaeger, Heinrich Rickert, Richard Kroner, Karl Hampe, Friedrich Baethgen, Eduard Norden, and Ulrich von Wilamowitz-Moellendorff.
At his arrival, Giovanni Gentile secured for him a position as lecturer in German at the Scuola Normale Superiore in Pisa.
It was at the Scuola Normale that Kristeller completed his first great works in the Renaissance: the Supplementum Ficinianum (1937) and The Philosophy of Marsilio Ficino (1943).