Based on the professional trajectory of the 24 most significant Canadian think tank members, we examine the links between them and the political-administrative sphere. Specifically, we look at the revolving doors between think tanks, the public administration, and political parties, with the premise that this proximity is likely to increase these organizations’ legitimacy in the eyes of public decision-makers. We also look at the links between think tanks and different sectors of economic activity, this time based on the idea that these groups can serve as a relay for certain industrial actors, reconfiguring lobbying as traditionally conceived. Our results show that, indeed, the phenomenon of revolving doors is very present in the world of Canadian think tanks; furthermore, some of them are well positioned to link certain industrial actors to the political-administrative sphere.