Since police officers, lawyers, and mental health professionals are frequently involved in one phase or another of a person's encounter with the law, the attitudes of members of these groups toward disabled persons can influence their behavior, which will in turn influence the ways that a disabled person is treated in the legal system. Although there are not many studies of these attitudes, some tentative conclusions can be drawn. Data indicate that the attitudes of police officers are related to both the extent of their formal education and the amount of information they have about relating to persons with various types of disabilities. The studies of lawyers indicate that those who have disabled clients tend to be more knowledgeable and to have more positive attitudes than lawyers without such clients, but it is not easy to turn lawyers into advocates for disabled clients. The attitudes of mental health professionals, who may be called on to provide advice to police officers or lawyers or to testify in court cases, have some negative aspects that may impair their helpfulness, but their attitudes are more positive than those of l ess educated persons. The data also indicate that the attitudes of psychologists are l ess negative than those of psychiatrists. There is a need for rehabilitation psychologists to undertake studies of the attitudes of these groups and to set up programs designed to change the attitudes of members of these professions.