This report by the World Health Organization (WHO) documents the Joint External Evaluation (JEE) of the International Health Regulations (IHR) core capacities of the Kingdom of Thailand, conducted from October 31 to November 4, 2022. The evaluation assesses Thailand's capabilities in various health security areas, including legal instruments, financing, antimicrobial resistance, zoonotic diseases, biosafety, and immunization. It also reviews the national laboratory system, surveillance, human resources, and health emergency management. The report aims to enhance global health security by identifying strengths and areas for improvement in Thailand's health system, with contributions from multiple international experts and organizations. It is intended for policymakers, health authorities, and international stakeholders involved in public health and safety.