Commonly developing in adolescence and following a chronic course, eating disorders are life-threatening psychological disorders and typically very difficult to treat despite the body of research exploring treatment options. Due to the high levels of severity and the enduring nature of eating disorders, schema therapy has been proposed as a more effective treatment than cognitive behaviour therapy. To assess the effectiveness of schema therapy in adults with eating disorders, the present systematic review was designed in accordance with PRISMA guidelines. A structured search of electronic databases and grey literature was conducted, and the Mixed Methods Assessment Tool was used to assess the quality of each article. Four articles including 151 participants were found which demonstrated that schema therapy is effective at reducing eating disorder symptoms and behaviour and general psychopathology. Despite the limitations of this study, including the scarcity of research available and varying methodologies used, the present systematic review found evidence supporting the use of schema therapy in patients with eating disorders, particularly those experiencing severe and enduring forms.