Konrad Hermann Theodor Knopp (22 July 1882 – 20 April 1957) was a German mathematician who worked on generalized limits and complex functions.

Paul's hometown of Neustettin, then part of Germany, became Polish territory after the Second World War and is now called Szczecinek.

His doctoral thesis, entitled Grenzwerte von Reihen bei der Annäherung an die Konvergenzgrenze, was supervised by Schottky and Frobenius; he received his PhD in 1907.

After Qingdao he returned to Germany for good and taught at military academies while writing his habilitation thesis for Berlin University.

Knopp's mathematical research was on "generalized limits" and he wrote two books on sequences and series: He also authored two texts on functions of a complex variable as well as a problem book: He also produced the sixth edition of the three-volume work (a fourth volume was later added by Friedrich Lösch in 1980): The following works were used as sources for the MacTutor biography on which this article was originally based: