"Britney/Brittany" is the second episode of the second season of the American television series Glee, and the twenty-fourth episode overall. Written and directed by series creator Ryan Murphy, it premiered on the Fox network on September 28, 2010, and pays tribute to Britney Spears. Glee club member Brittany S. Pierce experiences an anesthesia-induced hallucination in which she recreates iconic Spears moments, and comes to self-realization, and several club members follow suit. Co-captains Rachel and Finn experience difficulties in their relationship, and club director Will Schuester becomes jealous of guidance counselor Emma Pillsbury's new boyfriend, Dr. Carl Howell.

The second season of the musical comedy-drama television series Glee originally aired between September 21, 2010, and May 24, 2011, on Fox in the United States. The 22-episode season was produced by 20th Century Fox Television and Ryan Murphy Television, with executive producers Dante Di Loreto and series co-creators Ryan Murphy and Brad Falchuk, with the other series co-creator, Ian Brennan, as co-executive producer.