The HIV and OUD Service and Funding Matrices Template supports state health departments in identifying opportunities for enhanced coordination between HIV and OUD funding and service provision. By consolidating information about state HIV and OUD services, agencies, and funding sources into a comprehensive and easy-to-digest format, the matrices can help document which agencies provide both HIV and OUD services and receive both HIV and OUD funding. This resource also provides support for discussions on how to leverage funding sources to improve integration across HIV and OUD services.