Between the years 1964 and 1974, Ethiopian post-secondary students studying at home, in Europe, and in North America produced a number of journals where they explored the relationship between social theory and social change within the project of building a socialist Ethiopia. Ethiopia in Theory examines the literature of this student movement, together with the movement’s afterlife in Ethiopian politics and society in order to ask: what does it mean to write today about the appropriation and indigenization of Marxist and mainstream social science ideas in an Ethiopian and African context; and, importantly, what does the archive of revolutionary thought in Africa teach us about the practice of critical theory more generally.