In an increasingly globalised economy, the fight against bribery in international business is crucial to maintaining fair competition and ensuring the integrity of global markets. This report, which was prepared in the context of the Thailand Country Programme, assesses Thailand’s legal and policy framework for fighting transnational bribery based on the criteria applied to countries seeking accession to the OECD Convention on Combating Bribery of Foreign Public Officials in International Business Transactions. The report analyses Thailand’s criminal legislation, the sanctions applicable to individuals and legal entities that commit bribery, and Thailand’s track record in the investigation and prosecution of bribery offences. It also examines international cooperation rules, including mutual legal assistance and extradition, as well as the non-tax deductibility of bribes. For each area of analysis, the report identifies possibilities for improvement and provides actionable recommendations.