metis
aged ecumenical anthropologist
No, he was not as fascism is right wing, not left. He and his fellow NAZI's used "socialist" in the title of the party as a smokescreen, which is also what both Mussolini and Franco did as well.Hitler was a leftist, after all.
Fascism (/ˈfæʃɪzəm/ FASH-izəm) is a form of far-right, authoritarian ultranationalism,[1] characterized by dictatorial power, forcible suppression of opposition, and strong regimentation of society and the economy[2] that rose to prominence in early 20th-century Europe.[3][4] The first fascist movements emerged in Italy during World War I, before spreading to other European countries.[3] Opposed to anarchism, democracy, liberalism, and Marxism,[5] fascism is placed on the far-right wing within the traditional left–right spectrum.[3][6] -- Fascism - Wikipedia