Cannabis use is prevalent among individuals with binge eating (BE; i.e., the inability to control eating behavior). Yet, only two studies to date (both over 20 years old) have tested if cannabis use relates to clinical severity among BE samples. Characterizing the relationship between cannabis use, eating disorder (ED) severity, and other psychiatric symptoms in BE samples is necessary for informing screening and clinical recommendations. The present study characterized cannabis use among adults with BE and tested between-group and within-group relationships between cannabis use and eating disorder symptoms, alcohol consumption and symptoms, and depression symptoms. Participants (N = 165) were treatment-seeking adults with at least once weekly BE in the past 3 months who completed clinical interviews and self-report measures before treatment. Over 23% of participants reported cannabis use in the past 3 months, with most persons using cannabis reported using "once or twice" or "monthly." Most persons using cannabis reported cannabis-related symptoms. Persons using cannabis reported significantly greater alcohol consumption and were more likely to report alcohol-related symptoms compared to persons not using cannabis. No associations were observed between cannabis use, eating disorder symptoms, and depressions symptoms. These findings indicate that a notable subset of patients with BE use cannabis and experience cannabis-related problems, and that cannabis and alcohol use may be related for these individuals. Considering legal and sociocultural shifts in cannabis availability and prevalence, results from the present study support screening for cannabis and alcohol use patterns in patients with BE. (PsycInfo Database Record (c) 2024 APA, all rights reserved).