Alexandre Bloch was a French academic painter, specialising in military subjects.

Bloch was born in the Boulevard de la Chapelle, 18th arrondissement of Paris. He was a pupil of Jean-Léon Gérôme and Jules Bastien-Lepage. He first exhibited at the Salon in 1880. He was a painter of genre scenes but also of historical patriotic subjects, exhibiting pictures at the Salon of episodes from the Chouannerie and the Franco-Prussian War.

He was created a Chevalier of the Légion d'honneur in 1911 for his services as a lieutenant of the military reserve in a territorial infantry regiment.

At his death he was an accredited military artist of the Musée de l'Armée in Paris.

He died unmarried on 11 November 1919 in the Hôpital Tenon in the 20th arrondissement of Paris.