Chapter 3 tackles a major theme applied throughout successive chapters: agency. We begin with an overview of how agency, leadership, and entrepreneurship have been identified using network analysis. We present political entrepreneurship and leadership as network constructs and identify political influence as often operating across multiple modes. We demonstrate these arguments with three applications: a unimodal case of EU competition policy, a 2-mode case analyzing interests in US labor policy, and a multimodal case inferring agency at multiple levels in global fisheries governance.