This article addresses the question as to why, in contrast to national governments, city administrations engage so enthusiastically with urban environmental problems. It argues that the politics of urban environmentalism need to be examined not from the point of view of ecological rationality and alternative politics, but as an integral part of spatial transformation and social regulation under neoliberal urbanization. Recent contributions to theoretical debate on this issue are examined, with especial attention paid to the themes of governance, citizenship, subjectivity and ‘regulation of the self’, and their relevance to the understanding of contemporary urban environmental policy and management practices. The article explores the way in which urban environmental management can be understood as contributing to the constitution of the self-governing citizen in the individualized urban milieu of contemporary cities, a process in which the progressive and libertarian aspirations of much early environmental thought have been subtly converted into a new form of subjection to the strategic requirements and political conveniences of neoliberal city administrations.