The Dean scream was an energetic scream by Howard Dean, the former governor of Vermont, on January 19, 2004, during a speech he gave at the Val-Air Ballroom in West Des Moines, Iowa. That night, the presidential candidate had just lost the Iowa caucus to John Kerry and wanted to reassure his supporters. He listed states he would win to a raucous audience before screaming "Yeah!" Within four days, it was broadcast 633 times on national news networks and cable channels.

Howard Brush Dean III is an American physician, author, consultant, and retired politician who served as the 79th governor of Vermont from 1991 to 2003 and chair of the Democratic National Committee (DNC) from 2005 to 2009. Dean was an unsuccessful candidate for the Democratic nomination in the 2004 presidential election. Later, his implementation of the fifty-state strategy as head of the DNC is credited with the Democratic victories in the 2006 and 2008 elections. Afterward, he became a political commentator and consultant to McKenna Long & Aldridge, a law and lobbying firm.