Simon Spitzer (3 February 1826 – 2 April 1887)[2] was an Austrian mathematician, whose work largely focused on the integration of differential equations.

[3] He was active as a writer in his field and, in addition to several independent works, published a large number of mathematical treatises in scholarly journals.

[4] Spitzer was born in Vienna into a Jewish family originating from Nikolsburg, Moravia.

From 1871 he was one of the directors of the private Österreichischen Hypotheken-Bank and a trusted advisor to the world of finance and commerce.

[1] Spitzer was known for his irritable nature, and became involved in scientific disputes—most notably with Joseph Petzval[6][7]—as the battleground for which he chose political newspapers as opposed to scholarly practice.