Health services research is important in improving health systems’ and providers’ efficiency and effectiveness. This may require health services to intervene at an individual and community level to address people’s complex social issues. An important issue is social connections, which have been identified as a social determinant of health and can help buffer stressful life events. Social support networks can be visualized using eco-maps, a tool that originated in child welfare practices and has been adopted widely by clinicians and researchers. This paper aims to understand where and how eco-maps have been used in health services research. To answer the research questions, this scoping review used the Joanna Briggs Institute guidelines for scoping reviews. In total, 70 studies were included in the scoping review. The authors found that social support denoted in an eco-map does not guarantee the provision of support; however, the dialogue needed to create an eco-map could facilitate conversations about care expectations, identification of vulnerable points or risk factors, and actions to improve family and individual functioning. A significant gap remains in the knowledge and use of eco-maps in identifying population service and resource gaps and how to bridge the knowledge-to-action chasm better. Further exploration is needed to examine how to optimize the application of eco-mapping in the health services context, including generating guidelines, templates, or instructions for implementation. Therefore, addressing this gap is vital for ensuring eco-mapping informs future service design and policy changes.