Abstract: This article analyzes how certain rights enshrined in Argentina’s Constitution may play a role in supporting the implementation of Food Sovereignty in a national space. First, the article describes the main elements of Food Sovereignty and the ambiguous situation of law in the movement. After describing Argentina’s constitutional system, with special reference to social rights, the article links every main element of Food Sovereignty with one or more constitutional rights that could serve as a defense against policies detrimental to Food Sovereignty or as an instrument to promote or protect the implementation of this new food system.