Peer support services specifically intended to contribute to suicide risk reduction are becoming more prominent in healthcare systems and community settings. Such services can be used to address barriers for receiving proven interventions, while also improving hope, connection, recovery, and empowerment. Despite emerging research on the effectiveness and implementation of these models, there are research gaps that could lead to missed opportunities in optimizing them. This NIMH-sponsored workshop will bring together experts in peer support suicide prevention to discuss relevant conceptual frameworks, recent advances in understanding what works and for whom, service settings and service-user characteristics that inform intervention strategies across the crisis services continuum, digital and tele-health applications, considerations for youth, and equity considerations. The workshop will identify innovative advancements and areas that need additional research as the field moves forward.