This article reviews privileged communication laws for psychotherapists as these laws apply to child custody cases. Although many states have privileged communication laws for mental health clients, these laws contain several exceptions and waivers. In addition, judges are likely to interpret privileged communication laws strictly because they place a high value on the welfare of children and because the laws run counter to the legal tradition of admitting evidence into court. Psychotherapists are alerted to the limits and ambiguities of privileged communication laws.