Ethnic territorial autonomy (ETA) is an institutional way to ensure simultaneously the integrity of the state and the rights of ethnic minorities through preferential policies in certain ethnically sensitive spheres. Language preferential policies differ greatly across multilingual ETAs and can be analyzed through the concept of “language territorial regime” (LTR). In this paper, we examine LTRs along two dimensions: (1) the scope of state regulation of language use and (2) the way language rights are perceived and used. The first considers the depth and universality of state regulation of language use – “strong” or “weak.” The second concerns whether the community's approach to language rights is symbolic or pragmatic. The combination of these two dimensions allows the categorization of LTRs into four main classes: “strong parting-regime,” “strong pooling-regime,” “weak pooling-regime,” and “weak parting-regime.” A comparison of South Tyrol, Vojvodina, and Wales allows conceptualizing LTR as a system of de jure institutional arrangements of linguistic issues and practice of self-organization and perpetuation of multilingual communities.