John Morgan McGarvey (born December 23, 1979) is an American attorney and politician serving as the U.S. representative for Kentucky's 3rd congressional district since 2023. A Democrat, he represented the 19th district in the Kentucky Senate from 2013 to 2023. In 2018, he was elected minority leader, becoming one of the youngest members of a general assembly in the nation to serve in a leadership role. He is currently the only Democrat in Kentucky's congressional delegation.