"Pot o' Gold" is the fourth episode of the third season of the American musical television series Glee, and the forty-eighth overall. It was written by Ali Adler, directed by Adam Shankman, and was first broadcast on Fox in the United States on November 1, 2011. The episode featured the arrival of Irish foreign exchange student Rory Flanagan at McKinley High, a new challenger to Sue Sylvester in her congressional race, and the ongoing fragmentation of the show's central glee club, New Directions.

The third season of the musical comedy-drama television series Glee was commissioned on May 23, 2010, by Fox while the first season aired. It aired between September 20, 2011, and May 22, 2012, and was produced by 20th Century Fox Television and Ryan Murphy Television, with executive producers Dante Di Loreto and series co-creators Ryan Murphy, Brad Falchuk and Ian Brennan.