This paper aims to reconstruct the concept of alienation as a live topic for active social theorizing. Joining Marxian and Simmelian ideas, it provides a multi-dimensional, formal, and synthetic theory of alienation. The paper develops a set of theoretical tools for articulating formal elements of action that make alienation possible, without giving conceptual priority to alienation in the sphere of production, or within that sphere to the alienation of labor. These tools make it possible to derive classical notions of alienation as specific, contingent combinations of multiple elements, theorizing them as concrete socio-historical configurations of a broader universe of possibilities. They also organize systematic reflection on various forms and relations of alienation; not only those between for instance labor and capital, but also among all four factors of production: land, labor, capital, and entrepreneurship. The paper accordingly develops an original, multi-dimensional theorization of alienation for a complex, pluralistic world.This paper aims to reconstruct the concept of alienation as a live topic for active social theorizing. 1 It seeks to recombine and expand elements of classical alienation theory to produce a more multi-dimensional, formal, and comprehensive theory of alienation, geared toward the pluralistic contemporary social world. While classical Marxian alienation theory provides important resources for this endeavor, it is also limited in crucial respects. Most notably its essentialism and reliance on the logic of dichotomies restrict its adaptability to the present. To develop a new conceptualization, this paper brings certain Simmelian sensibilities to bear on the Marxian formulation, such as pluralism and perspectivism, while drawing from Jaeggi's (2014) path-breaking philosophical work.Alienation is a crucial term in the social theoretical lexicon that has done important work and can continue to do so, if it can be refashioned into a multi-dimensional tool for understanding and analyzing our pluralistic contemporary scene. Though in recent decades alienation theory has been relatively marginalized among social theorists, worries about