Landslides continue to cause costly damage and loss of lives. Many techniques are available for reducing landslide hazards; 27 are described in this paper. An overview of these techniques is useful to planners who implement hazard-reduction programs, to engineers who serve as advisors to local or state governments, and to decisionmakers who select the most appropriate technique for a given situation. Prerequisites for the successful use of these techniques are hazard information understandable to nongeologists and adequate communication of this information to those who will, or are required to, use it. It is concluded that certain factors needed to ensure the lasting effectiveness of these techniques are usually beyond the control of the public planner, engineer, and decisionmaker.