José María Estivalis Calvo (1886–1939), better known as Armand Guerra, was a Spanish director and anarchist.

With the film cooperative Le cinéma du peuple, Guerra directed the 1913 short Les miséres de l'aiguille featuring Musidora and the first segment of the 1914 Lucien Descaves's La commune.

Guerra lived in Russia during the October Revolution and Germany during the Weimar Republic, where he was a producer, screenwriter, and writer of Spanish subtitles.

In conjunction with the Confederación Nacional del Trabajo, he began to film Carne de fieras [es] in July 1936 but was interrupted by the Spanish Civil War.

As communists came to dominate the anarchists in Spain, he moved his wife and daughter to France, where he worked on solidarity campaigns for the Spanish Republicans.