This essay examines the role of racial, ethnic, and cultural bias in custody cases. It analyzes cases where the court explicitly considered the parents' racial, ethnic, or cultural background and cases where the court did not acknowledge these factors but where it is clear from the court's opinion that biases influenced its decision. It then briefly describes the literature on implicit bias to demonstrate how biases may influence the assessments of custody evaluators, lawyers, and judges despite best efforts to make fair and impartial decisions. Drawing on studies suggesting that individuals can reduce their implicit biases and their effects on decision making, the essay explores individual strategies and institutional reforms to address bias in custody disputes. Key Points for the Family Court Community: Custody evaluators, lawyers, and judges are influenced by the racial, ethnic, and cultural backgrounds of the parents and the child in custody disputes. Implicit biases may influence how custody evaluators, lawyers, and judges interpret parents' behaviors and testimony. Preferences for parenting styles favored by middle-class families disproportionately disadvantage racial and ethnic minorities and low-income families. The best interests of the child standard increases the risk of intuitive and biased assessments. Acknowledgement of racial, ethnic, and cultural differences is necessary to reduce bias. Individual strategies and institutional reforms may help reduce bias and its effect on assessments and decision making in custody cases.