The mayoral election of 2007 in Pittsburgh, Pennsylvania was a special election held on Tuesday, November 6, 2007. The incumbent mayor, Luke Ravenstahl of the Democratic Party faced Republican challenger Mark DeSantis, a telecommunications executive and adjunct professor at Carnegie Mellon University. The race was notable for the strength of its Republican challenger, rare in Pittsburgh, and the election of such a young mayor, Ravenstahl being 27 years old at the time. Ravenstahl was elected with a comfortable margin in an election marked by unusually cold weather but record voter turnout.

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.