Objectives: Much is known about some healthcare professionals’ attitudes toward patients with substance use disorders, but few studies have specifically looked at emergency department (ED) physicians. Individuals with substance use disorders are more likely to be people who chronically, frequently use the ED, and thus ED physicians are in a unique position to provide early identification and intervention for people struggling with addiction. The purpose of this study was to understand ED physicians’ attitudes toward patients with substance use disorder with the aim of decreasing stigma and improving the care of ED patients with substance use disorder.