Alessandro Padoa (14 October 1868 – 25 November 1937) was an Italian mathematician and logician, a contributor to the school of Giuseppe Peano.

The following description of Padoa's career is included in a biography of Peano: The congresses in Paris in 1900 were particularly notable.

Padoa's addresses at these congresses have been well remembered for their clear and unconfused exposition of the modern axiomatic method in mathematics.

[3] At the International Congress of Philosophy Padoa spoke on "Logical Introduction to Any Deductive Theory".

At the outset he discusses the various selections of primitive notions in geometry at the time: Padoa completed his address by suggesting and demonstrating his own development of geometric concepts.