After completing his secondary education André Lebon attended the Faculty of Law in Paris, where he obtained his license.

[2] Until 1890, under the pseudonym André Daniel, he published an annual review of the history of the previous year entitled L'Année politique.

Lebon ran for election on 22 September 1889 as deputy for Parthenay, Deux-Sèvres, on the Progressive Republican platform.

[2] Lebon was Minister of Commerce, Industry and Posts & Telegraphs from 26 January 1895 to 28 October 1895 in the cabinet of Alexandre Ribot.

[2] Georges Bonnefous, who later would also become Minister of Commerce and Industry, served as his deputy chief of staff.

[2] In the general elections of 8 May 1898 Lebon ran again for the Parthenay district but was defeated in the first round by the Marquis de Maussabré.