International terrorism has been a topical issue that caught the UN’s attention since the last quarter of the twentieth century. However, the UN initially dealt with it as an internal matter. In this regard, terrorism has become a global threat with the emergence of terrorist organizations. These organizations are not limited to a specific geographical scope; some of them are linked to countries, while others seek to occupy territories in order to control the oil wells and even create armies. They cannot continuously conduct their activities without financial support that provides it with the means to implement its plans and the resources to finance its field and logistical operations in all forms. One of the most important sources of financing terrorist and their organizations is money laundering operations. This research is to analyze the UN’s role in combating money laundering to prevent terrorist acts around the globe.