This chapter focuses on emerging forms of management related to organizational religious diversification in Finland. It explores how the public administration of Finland copes with this new religious diversity. There has been both a novel interest in religious affairs by the Finnish public administration and a shift of governing religions from using church law to employing networks such as representative councils and interfaith associations. The chapter suggests that the historical and legal church-state relationship in contemporary Finland is supplemented by a new network-based governance of religion that does not replace historical church-state relations but works alongside them. Religious networks and representational organizations such as Cooperation of Religions in Finland (CORE) and the Islamic Council of Finland (SINE) are useful tools for policy makers in getting to grips with contemporary religious diversity. The chapter describes that in order analyse how states aim to regulate and manage contemporary religious diversity, look at how historical church-state relations function together with modern-day governance networks.