国际武器贸易条例（International Traffic in Arms Regulations，缩写为ITAR）是美国为了控制与军事有关的货物和服务进出口而制定的一套法规体系。由美国国务院国防武器贸易局负责执行这一条例。其主要目的是严格规制与军事有关的技术和产品的进出口，维护美国的国家安全利益和推进美国外交。

International Traffic in Arms Regulations (ITAR) control the export and import of defense-related articles and services on the United States Munitions List (USML). These regulations implement the provisions of the Arms Export Control Act (AECA), and are described in Title 22 (Foreign Relations), Chapter I (Department of State), Subchapter M of the Code of Federal Regulations. The Department of State Directorate of Defense Trade Controls (DDTC) interprets and enforces ITAR. Its goal is to safeguard U.S. national security and further U.S. foreign policy objectives. The related Export Administration Regulations (Code of Federal Regulations Title 15 chapter VII, subchapter C) are enforced and interpreted by the Bureau of Industry and Security in the Commerce Department. The Department of Defense is also involved in the review and approval process. Physical enforcement of the ITAR; and all import and export laws of the United States is performed by Homeland Security Investigations Special Agents (formerly U.S. Customs) under Immigration and Customs Enforcement, an agency of the Department of Homeland Security. Additionally, Customs and Border Protection Officers, also under the Department of Homeland Security, inspect imports and exports at U.S. Border Crossings and International Airports and enforce import and export regulations.