John McConnell Wolfe Jr. was an American attorney and perennial political candidate. He was the Democratic nominee for Tennessee's 3rd Congressional District in 2002 and 2004. He was best known for having challenged President Barack Obama for the Democratic Party's 2012 presidential nomination. He ultimately emerged as the most successful challenger, receiving the second-highest number of delegates (23) and popular votes (116,639).

The 3rd congressional district of Tennessee is a congressional district in East Tennessee. It has been represented by Republican Chuck Fleischmann since January 2011. The third district has been centered on Chattanooga since before the Civil War.