Socially (un)sustainable urban planning – concerning social sustainability as ideology in the discourse of urban planning. This thesis deals with the subject of social sustainability within the context of urban planning. The study is based on interviews with several participants that consist of public officials and politicians in the municipality of Norrköping, Sweden. The purpose of the study is to analyze and problematize social sustainability as a concept in relation to the modern post-industrial city and its role as a feature on the urban planning agenda. The analysis takes the methodological approach of Critical discourse analysis (CDA) in order to frame the ideas and opinions of the participants as parts of a discourse of urban planning, and how the discursive synthesis can be conceived in terms of ideology. The results describe a picture of Norrköping, with its industrial history and contemporary challenges, as a city in need of a new basis for economic growth in order to pave the way for the social dimension of sustainable development. This predicament serves as the discursive motive for the planning’s increased focus on place branding and urban attractiveness. Another discursive element emphasizes mixed forms of tenure on the housing market, as well as public spaces and venues as essential features in the socially sustainable city. The thesis concludes in highlighting the discourse’s role in reproducing a neoliberal ideology on the area of urban planning.