AbstractThis article argues that non-Muslim engagement with 19th-century Ottoman reform should be understood in the context of a confessionalized politics that originally fostered partnerships of governance in the 18th century. The confessionalization of non-Muslim communities in the 18th century, which resulted in the political empowerment of Istanbul-based ethnarchs, promoted the establishment of robust communal boundaries that were more legible to the central state. These arrangements also made non-Muslim communities such as the Armenians partners in governance, responsible for supporting the state's effort to maintain its place atop a contentious imperial politics. The Tanzimat reforms, which reorganized non-Muslim communities and devolved some power from the clergy to the laity, were not a novelty, but instead a renegotiation of non-Muslims’ roles in the centralization of state. Rather than embrace secularized identities, non-Muslims enthusiastically used their own religious institutions to promote state centralization. In the process, they reconfigured relations of power in the region that left non-Muslims structurally marginalized.