Leo Königsberger (15 October 1837 – 15 December 1921) was a German mathematician, and historian of science.

He is best known for his three-volume biography[1] of Hermann von Helmholtz, which remains the standard reference on the subject.

Königsberger was born in Posen (now Poznań, Poland), the son of a successful merchant.

He studied at the University of Berlin with Karl Weierstrass, where he taught mathematics and physics (1860–64).

[2] Königsberger's own research was primarily on elliptic functions and differential equations.