The Department of Housing and Urban Development’s (HUD’s) Winter 2019 issue of Evidence Matters focuses on landlords and their role in the Housing Choice Voucher (HCV) program. The issue has three articles which provide insight into different aspects of landlord behavior and landlord retention. The first article offers an overview of the HCV program; provides a description of the nation’s rental units and its landlords; provides a broad overview of recent research on landlords; provides an overview of research on the impacts of low landlord participation; and offers strategies to increase landlord participation. The second article, again, discusses research on landlords and voucher acceptance. The third article discusses strategies that two PHAs are using to incentivize landlord participation.