Family functioning was compared between suicide-attempting and nonsuicidal depressed inpatients in order to further understand psychosocial determinants of suicidal behavior. Suicidal behavior was strongly associated with a discrepancy between the patient's perception of his/her family and the perception held by other family members. Suicide-attempting depressed inpatients perceived their family functioning to be worse than did their families. Suicidal patients also viewed their families more negatively than did depressed nonsuicidal inpatients, who actually viewed their family functioning more positively than did their family members. The clinical implications of these findings are discussed.