This paper reviews the use of LIDAR (Light Detection and Ranging) in landslide investigations. It discusses the application of LIDAR technologies for landslide, rockfall, and debris-flow analysis, classifying them into four categories: (1) Detection and characterization of mass movements; (2) Hazard assessment and susceptibility mapping; (3) Modelling; (4) Monitoring. LIDAR-derived high-resolution digital elevation models (HRDEMs) are crucial for landslide investigations, providing accurate and detailed topographic information. While HRDEMs are not yet widely used, they have opened new areas of application. The paper highlights the advantages of LIDAR, including high-resolution data acquisition, fast processing, and portability. However, challenges remain, such as data processing complexity and the need for post-processing techniques. The paper also discusses the integration of LIDAR with other remote sensing technologies and the potential for future developments in LIDAR applications for landslide monitoring and hazard assessment. Overall, LIDAR is becoming an essential tool in landslide risk management, offering improved accuracy and detailed insights into landslide mechanisms and behavior.This paper reviews the use of LIDAR (Light Detection and Ranging) in landslide investigations. It discusses the application of LIDAR technologies for landslide, rockfall, and debris-flow analysis, classifying them into four categories: (1) Detection and characterization of mass movements; (2) Hazard assessment and susceptibility mapping; (3) Modelling; (4) Monitoring. LIDAR-derived high-resolution digital elevation models (HRDEMs) are crucial for landslide investigations, providing accurate and detailed topographic information. While HRDEMs are not yet widely used, they have opened new areas of application. The paper highlights the advantages of LIDAR, including high-resolution data acquisition, fast processing, and portability. However, challenges remain, such as data processing complexity and the need for post-processing techniques. The paper also discusses the integration of LIDAR with other remote sensing technologies and the potential for future developments in LIDAR applications for landslide monitoring and hazard assessment. Overall, LIDAR is becoming an essential tool in landslide risk management, offering improved accuracy and detailed insights into landslide mechanisms and behavior.