Successful arson programs involve both prevention and control activities. There are three major computer tools for assisting in prevention, control, and investigation of arson. These tools include the National Fire Incident Reporting System, which contains information about all fires as reported by responding units; the Arson Information Management System, which contains additional data beyond the incident reports on arson fires; and the Arson Early Warning System, which monitors key trigger variables such as unpaid taxes on all buildings. In New Haven, Conn., a system has been developed which provides the arson squad with instant information about building fires and the people involved. This system facilitated the procurement of confessions from two suspects in a recent arson case. The University of Tennessee has been using computers to aid fire investigators for several years. They have developed a means to determine arson patterns for the purpose of establishing an incendiary crime prevention program. The Phoenix Fire Department has developed and implemented an arson prevention and analysis program which features both prevention and postfire components. Computers will continue to play an important role in arson prevention and investigation efforts. Five footnotes and 10 references are provided.