Jules Louis Lewal (13 December 1823 – 22 January 1908) was a French general, who also wrote scripts like Stratégie de combat (translation: Combat strategy).

He was born in Paris; entered the army in 1846; served in the Italian campaign of 1859, with the French troops in Mexico (1862), and, after cooperation with Adolphe Niel in the army reforms, in the Franco-Prussian War.

He was promoted to brigadier general in 1874; became head of the Military Academy three years after.

From January to April 1885, he was Minister of War in Ferry's cabinet.

This biographical article related to the French military is a stub.