The C-DIAS Fellowship in Addiction Dissemination and Implementation (D&I) Science is designed for early or mid-career individuals who have a goal of using rigorous methods in D&I science to improve public access to high-quality addiction treatment. The 2023-2024 inaugural cohort consists of seven promising individuals whose research projects span a variety of topics including culturally-adapted substance use treatments, stigma-reduction, effectiveness of digital toolkits, and so much more!