Ernesto Pascal (1865–1940) was an Italian mathematician.

Pascal graduated in mathematics from the University of Naples in 1887.

In the following two years he attended courses in the universities of Pisa and Göttingen; in the last one Pascal studied under Felix Klein who influenced him.

Here, as Dean of the Faculty of Sciences he reorganised the teaching of mathematics, creating for each professorship a laboratory equipped with models and instruments.

[2] Pascal was remembered for his work on elliptic functions based on Jacobi theta function.