In our research project, we will elaborate Charles Sanders Peirce’s three philosophical categories, and show how these categories operate at the levels of Protection, Regulation and Identity in the process of sign-meaning and sign-making within Cultural Heritage, Law and Discourse. The process of semiosis comprises a triadic dimension between signs, their functions and interpretations, operating on four axes within our special issue: Theoretical Cultural Heritage Issue (1st axis), Cultural Heritage and Postcolonialism (2nd axis), Intertwined Notions of Heritage and Culture (3rd axis), and Protection of Cultural Heritage (4th axis).