Mika Feldman de Etchebéhère (née Micaela Feldman; Moisés Ville, Santa Fe Province, March 14, 1902 — Paris, July 7, 1992) was an Argentine militant anarchist and Marxist. She served as captain of the POUM militia during the Spanish Civil War in 1936, and was also active in the anarcha-feminist organization, Mujeres Libres.