In the current conditions of development of market mechanisms for regulating the domestic economy, the issue of the impact of negative factors is more relevant than ever. In addition to Russia's military aggression, the introduction of martial law, and a significant number of forced restrictions on the activities of individuals and legal entities, the negative impact is also exerted by factors related to corruption, illegal enrichment, raiding, concealment of income or part thereof, money laundering, terrorist financing, etc. This situation necessitates the development of measures to reduce corruption, as well as the establishment of ongoing cooperation with international organizations to combat corruption. The purpose of the article is to determine the directions of international cooperation in the field of preventing manifestations of corruption in Ukraine, to study the effectiveness of such cooperation as one of the directions for reducing the level of corruption and the shadow economy, taking into account national and international anti-corruption programs, international experience in combating the legalization of income, money laundering or concealment of profits. The theoretical and practical basis of the study was the research of domestic scholars in the field of international cooperation in the field of combating corruption, legalization of the economy, analytical reports and data of the National Agency for the Prevention of Corruption and the National Anti-Corruption Bureau of Ukraine, indicators and benefits of cooperation between international organizations. Strategically important countries for Ukraine in recent years have become: Latvia, Germany, Poland, Montenegro, Moldova, and Lithuania. The most active organizations in terms of cooperation are: Financial Action Task Force on Money Laundering (FAFT); Egmont Group of Financial Intelligence Units; Council of Europe (Council of Europe Committee on the Evaluation of Anti-Money Laundering and Counter-Terrorist Financing Measures (MONEYVAL)); European Union; United Nations; World Bank; NATO; Organization for Security and Cooperation in Europe (OSCE); Organization for Economic Cooperation and Development (OECD); other international organizations in the field of financial monitoring. The most important areas of cooperation between domestic and international organizations in the field of combating corruption are: the creation of joint projects to combat money laundering and terrorist financing in Ukraine, the development of programs to combat money laundering and concealment of income, joint operations to expose terrorist financing schemes, the war in Ukraine, etc.