This article presents the results of a scoping review on the literature on cross-sector action in the field of homelessness, based on the Levac et al. (2010) framework. The objectives of the review were to document the cross-sector support and intervention practices, the effects of those practices, the experiences of the actors involved, as well as the factors influencing their implementation. Forty-four publications were selected and analysed. The results indicate avenues to support the development, implementation and research on cross-sector practices, as well as the systemic constraints to consider.