The current study aimed to test the clinical effectiveness of a cognitive-behavioral therapy (CBT) program for battered women in a community setting and to find out whether effectiveness of individual therapy can be improved in conjunction with group therapy. One hundred sixteen treatment-seeking battered women were assigned either to CBT on an individual basis or an individual and group basis. Psychological treatment, focused on post-traumatic stress disorder (PTSD), emotional discomfort, and impaired functioning, comprised a 17-session program, including emotional expression, psychoeducation, trauma re-exposure, coping skills, and problem-solving training. Although most treated patients in both groups improved in all variables (PTSD, emotional discomfort, and impaired functioning) at all assessments, the combined individual and group therapy did better than the individual therapy regarding PTSD symptoms and impaired functioning at follow-up assessments. These findings partially support the beneficial effects of group CBT as adjunctive therapy to individual CBT. Implications of this study for clinical practice and future research in this field are commented on.