Social network analysis (SNA) is a methodology for studying relationships and how individuals fit within networks. SNA can help funders achieve better impact through relationships by identifying opportunities, potential obstacles, and influential individuals. Examples show how foundations have used SNA to scale impact, understand grant outcomes, and inform future funding. SNA software like NodeXL and Gephi allow users to analyze and visualize their networks from professional sites like LinkedIn to understand network density, hierarchy, and connections. Resources are provided for continuing SNA learning.