Pittsburgh held a mayoral election on November 3, 2009. Incumbent mayor Luke Ravenstahl, a Democrat, defeated his two independent challengers by a wide margin. The 2009 election was the first regular-cycle election in which Ravenstahl participated; he was originally appointed as an interim mayor to succeed Bob O'Connor and subsequently won a special election in 2007.

Luke Robert Ravenstahl is an American politician who served as the 59th Mayor of Pittsburgh from 2006 until 2014. A Democrat, he became the youngest mayor in Pittsburgh's history in September 2006 at the age of 26. He was among the youngest mayors of a major city in American history.