Purpose: Peers are uniquely able to draw on their lived experiences to support trauma survivors' recovery. By understanding the functions and outcomes of peer support and the factors that impact implementation, evidence can be mobilized to enhance its application and uptake into standard practice. As such, we aimed to review the literature on peer support for trauma survivors to: Examine the role of peer support in recovery; Describe the nature and extent of peer support; Examine the influence of peer support on health and well-being; and Identify the barriers and facilitators to developing and implementing peer support.Methods: Scoping review methodology as outlined by Arksey and O'Malley.Results: Ninety-three articles were reviewed. Peer support was highlighted as an important component of care for trauma survivors and provided hope and guidance for the future postinjury. Most peer support programs were offered in the community and provided one-on-one support from peer mentors using various modalities. Interventions were successful when they involved knowledgeable peer mentors and maintained participant engagement. Prior negative experiences and stigma/privacy concerns deterred trauma survivors from participating.Conclusions: Peer support fulfills several functions throughout trauma survivors' recovery that may not otherwise be met within existing health care systems.