Although research on smart cities increasingly acknowledges the involvement of civil society actors, most studies fall short when it comes to clarifying the specific modalities of civil society involvement. By probing into the smart city ecology that has developed around the Amsterdam Smart City-Foundation, we explore not only the extent to which the civil society is part of a smart city ecology but also what role civil society actors hold within this ecology. This article draws on data gathered and analyzed through quantitative and qualitative methods. The qualitative analysis focuses on analyzing the institutional dynamics that shape civil society involvement in Amsterdam’s smart city ecology. The quantitative data are used to unravel the relational dynamics by quantifying collaborative patterns between different types of organizations in Amsterdam’s smart city ecology. Our findings reveal that powerful institutional dynamics, manifested through normative pressures, favor the involvement of socially oriented civil society actors. At the same time, however, relational dynamics that shape the collaborative patterns in the projects of the ecology rather exclude the socially oriented civil society at the benefit of an economically oriented civil society. In other words, while the entire ecology rhetorically adheres to an ethos of pervasive civil society involvement, politically, socially, and civically oriented civil society actors lack inter-organizational collaboration—even in the supposedly inclusive context of Amsterdam.