Linguistic justice is about institutions distributing material and symbolic resources fairly when they are faced with linguistic diversity. However, no theory of linguistic justice has developed a systematic and comprehensive account of the moral dilemmas that take place in interpersonal linguistic relationships, in particular the power dynamics leading to (linguistic) domination. The aim of this article is to start building a general theory of linguistic domination, one that offers new conceptual tools for both empirical and normative analyses of linguistically diverse (...) societies. Using the republican tradition of thought, I argue that there is linguistic domination whenever someone is subject to the uncontrolled capacity for interference over their linguistic uses, ideology and acquisition by another agent. This article tests under what conditions this phenomenon takes place and the parties involved in it (both in terms of individuals and political institutions). (shrink)