How does the ‘smart city’ manifest itself in practice? Our research aims to separate substance from spin in our analysis of the actually-existing smart city in Dublin, Ireland. We detail how the smart city has been brought into common discourse in the Dublin city region through the Smart Dublin initiative, examining how the erstwhile ‘accidental smart city’ until 2014 has been rearticulated into a new vision for Dublin. The chapter is divided into two parts. In the first part we map out the evolution of smart urbanism in Dublin by tracing its origins back to the adoption of neoliberal policies and practices and the rolling out of entrepreneurial urbanism in the late 1980s. In the second part, we detail the work of Smart Dublin and the three principle components of current smart city-branded activity in the city: an open data platform and big data analytics; the rebranding of autonomous technology-led systems and initiatives as smart city initiatives; supporting innovation and inward investment through testbedding and smart districts; and adopting new forms of procurement designed to meet city challenges. In doing so, we account for the relatively weak forms of civic participation in Dublin’s smart city endeavours to date.