Thailand is exposed to various natural hazards, which include coastal and fluvial flooding, drought, earthquakes, tsunamis, landslides, forest fires, heat waves, and epidemics. In the past four decades, the country’s disaster management system has been built, starting with the enactment of the National Social and Development Act (1978) and the Civil Threat Prevention Act (1979) as Thailand’s fundamental comprehensive disaster management laws. After the 2004 devastating Indian Ocean Tsunami struck Thailand’s southern coastline communities, the Royal Thai Government further developed its disaster management system by enacting the Disaster Prevention and Mitigation Act (2007) as the primary legislative framework for disaster risk management and response (DDPM 2021). In addition, the country also developed the National Disaster Risk Management Plan (2015–2020), which highlights relatively new thinking on Disaster Risk Reduction (DRR) and disaster prevention through DRR awareness raising before, during, and after disasters, in line with the Sendai Framework for Disaster Risk Reduction (2015–2030). This chapter synthesizes the legislations and guidelines in Thailand at various levels to make the country more resilient to various natural hazards. The study will also discuss the risk governance mechanism aligned with the legislation.