Child custody evaluations and decisions are often complicated and emotionally charged. The following guidelines are offered as a framework for clinical social workers who are asked by the judicial system to undertake these evaluations. The historical background of child custody and the theoretical considerations that have guided the courts are reviewed. The traditional areas of consideration and the empirical data related to these areas are examined. The guidelines present pertinent information regarding ethical considerations, parent-child relationship, parenting style, gender issues, parental conflict, parental alienation, domestic violence, race, religion, sexual preferences, geography, parental psychopathology, substance abuse, child's preference, physical health of the child, and behavioral health of the child. A format for the evaluation process is described and includes the role of the clinician, confidentiality, fees, and review of documents, interviewing, home visits, psychological testing, and the actual written report. Making recommendations to the court regarding child custody is an area of practice that clinical social workers encounter in ever-increasing numbers. Clinical social workers are called upon to give recommendations regarding child custody in neglect or abuse cases, in termination of parental rights proceedings, and in the area divorce and of guardianship. In an effort to provide clinicians with scientifically grounded 1 Lane parameters for rendering these recommendations, the following guidelines are recommended. These guidelines provide a framework of scientific principles, along with established and accepted clinical practice, to enhance the practitioner's decision making in these challenging and complicated cases. The guidelines are specifically designed for clinical social workers doing custody evaluations in cases of marital divorce and are restricted to that area of practice.