"At the Codfish Ball" is the seventh episode of the fifth season of the American television drama series Mad Men and the 59th episode of the series overall. It is named after the 1936 popular song of the same name by Lew Pollack and Sidney Mitchell. The episode was written by Jonathan Igla and directed by Michael Uppendahl. It originally aired on the AMC channel in the United States on April 29, 2012. This episode takes place from late September to early October 1966.