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Networks are not only a central organizing principle of biology, but also of cognitive, and social structures (Ellwardt, Aartsen, & van Tilburg, 2017; Gosak et al., 2018; Hu, Thomas, & Brunak, 2016). The theme of the 2019 Gerontological Society of America Conference is,“Strength in Age—Harnessing the Power of Networks.” In this special issue, contributing authors highlight many ways in which networks can be leveraged to support healthy aging, ranging from sensory to motor, cognitive, and social networks. The issue opens with a discussion of the important, underappreciated impact of sensory processing on cognitive performance in older adults. A second theme of the issue examines interactions between cognitive and physical networks. Finally, the articles discuss the broader impacts of the ways in which social and community networks shape early-life experiences, and in turn affect latelife cognition. Together …