To explore long-term associations between maltreatment in childhood and personality features in adulthood, 160 consecutive adult psychiatric outpatients completed self-administered questionnaires. Maltreatment was defined as either child abuse or neglect exerted by parents or other adults, coldness and overprotection by parents, or bullying by peers. The Childhood Trauma Questionnaire was used to detect childhood abuse by parents or other adults, while dimensions of parental coldness and overprotection were captured by the Parental Bonding Instrument. Bullying by peers was measured by an inventory used in schools. Personality variables were covered by the 5-PFa related to the “Big Five,” The Rosenberg Self-Esteem Scale, and the Locus of Control of Behavior. Reports of bullying by peers were linked to poor self-esteem and external locus of control. Child maltreatment by parents or other adults were linked to the Big Five personality dimensions; bullying by peers was not.