Joseph Patrick Kennedy III is an American politician and diplomat who currently serves as United States Special Envoy for Northern Ireland since 2022. Prior to this, Kennedy served as the U.S. representative for Massachusetts's 4th congressional district from 2013 to 2021. A member of the Democratic Party, he represented a district that extends from Boston's western suburbs to the state's South Coast. He worked as an assistant district attorney in the Cape and Islands and Middlesex County, Massachusetts, offices before his election to Congress. In January 2021, he became a CNN commentator.

The United States Special Envoy for Northern Ireland is the top U.S. diplomat supporting the Northern Ireland peace process. The position is held by Joe Kennedy III, appointed by President Joe Biden on December 19, 2022.