Élie Ducommun (19 February 1833, Geneva – 7 December 1906, Bern) was a Swiss peace activist.

[1] Born in Geneva, he worked as a tutor, language teacher, journalist and a translator for the Swiss federal Chancellery (1869–1873).

In 1867 he helped to found the Ligue de la paix et de la liberté (League of Peace and Freedom), though he continued working at other positions, including secretary for the Jura-Simplon Steel Company from 1873 to 1891.

He refused to accept a salary for the position, stating that he wished to serve in this capacity solely for reasons of idealism.

From 1895 he was made the director of Correspondance bi-mensuelle, journal of the International Peace Office.