Background: Previous research suggests caregivers of individuals with eating disorders (EDs) may attempt to reduce family strain by engaging in accommodation and enabling behaviors to avoid conflict or alleviate stress of the affected individual. Moreover, families often reorganize life around the ED, reinforcing ED behaviors and exacerbating family dysfunction and caregiver distress. However, limited research has examined how accommodation relates to caregivers' distress, family functioning, and treatment outcomes. The current study provides an initial evaluation of these associations among treatment-seeking individuals with EDs and their family members. Method: Forty family members of individuals receiving cognitive behavioral therapy for EDs in a residential treatment soetting completed the Accommodation and Enabling Scale for Eating Disorders (AESED) and measures of anxiety (Patient-Reported Outcomes Measurement Information System anxiety scale) and family functioning (Family Assessment Device; FAD) at the time of their family member's treatment admission. Results: Eighteen patients completed the Eating Disorder Examination-Questionnaire (EDE-Q) at admission and discharge. AESED scores were positively associated with family member anxiety, FAD roles, FAD behavioral control, and higher patient EDE-Q global scores at discharge. Conclusions: Findings provide preliminary evidence that greater family accommodation not only relates to poorer family functioning, but uniquely relates to worse ED treatment outcome.