Representation of Nationalism in Corporate Advertising of PT. Gudang Garam Tbk. Nationalism is a psychological condition in which somebody surrenders his loyalty to nation state in the name of a nation. While representation is something refers to message, by which reality is encoded in communication; by words, sound, image, or their combination. This thesis explains about how nationalism is represented in the corporate advertising of PT.Gudang Garam Tbk. version "Rumahku Indonesiaku" and "Rumahku Indonesiaku: Cahaya Asa". This is a qualitative research using semiotics method, based on the codes of television theory by John Fiske, syntagm-paradigm concept by Saussure, and the grammar of film and television. The nationalism represented in the advertising consists of self-determination, solidarity, patriotism, social justice, and national identity. Although the advertising is a Corporate Social Responsibility campaign, it still contains particular symbol refers to usual symbol that represents Gudang Garam cigarette product.