The article draws from two theoretical fields, innovation intermediation and sustainability transitions, to examine the role of government-affiliated intermediary organisations in system-level transitions. The role of intermediaries working between actors – producers and users, entrepreneurs and adopters, idea generators and funders – has seldom been specifically addressed in the transitions literature. Thus, the role of intermediary organisations in enacting change in socio-technical regimes, particularly of intermediaries falling between traditional public sector and private sector actors, is of interest in this article. Empirical analyses of two Finnish organisations, Sitra and Motiva, show that government-affiliated intermediaries are l...