In this paper, a study of personality disorders and psychopathy in imprisoned male batterers is carried out. A sample of 76 batterers sentenced for a severe offence of violence against their intimate partner was selected. All the participants were assessed with the MCMI-II before beginning a treatment program in prison for gender violence. Likewise, all participants were assessed with the PCL-R in order to identify psychopathic symptoms. According to the results, 86.8% of the sample showed at least one personality disorder. The most prevalent one was the Obsessive-compulsive Personality Disorder (57.8% of cases), followed by the Dependent Personality Disorder (34.2% of cases) and Paranoid Personality Disorder (25%). Regarding psychopathy, the results of PCL-R showed that there were 11 people (14.4% of the sample) who met the criteria for psychopathy or probable psychopathy. Finally, implications of this study for clinical practice and future research in this field are commented upon.