Language regulations in interwar Romania were affected by the antinomy between their political and legal (especially constitutional) architecture, devised along Western models, and the concrete political circumstances, in a polity whose aims were defined by the ethno-cultural and linguistic character of national community supportive of the state. The perception of the alterity of the new ethnic, religious and linguistic minorities—now accounting for a significant part of the total population—occurred through the lens of two conceptual paradigms, both of them ultimately striving to promote uniformity. On the one hand, the “nation state” character of interwar Romania entailed, at least implicitly, an advancement of the economic, social and professional status of the nation supportive of the state, to the disadvantage of the national minorities. The identity claims of the latter may well be accepted, but in exchange for relinquishing the right to participate in decision-making on major political issues, concerning the state as a whole. On the other hand, the state-centered legal thinking in constitutional and administrative law—adopted under French influence—was an instrument well-suited for promoting and achieving the desired cultural uniformity. Nevertheless, the discrepancy between the Western legal and political paradigm identifying the state with the (political) nation—which formally coined the Versailles Treaty system—and the Central-European (mainly Austrian) pattern of thought, more sensitive to linguistic diversity, was discernable also at the level of the minority treaties.