Luke Robert Ravenstahl (born February 6, 1980) is the current Mayor of Pittsburgh. In September 2006, he became the youngest mayor in Pittsburgh's history at the age of 26. He is among the youngest mayors of a major city in American history.

A graduate of North Catholic High School, Ravenstahl attended the University of Pittsburgh before graduating from Washington & Jefferson College. Four months after his graduation, aged 23, he ran for a seat on the Pittsburgh City Council. He was elected and took office in January 2004 before being appointed City Council President in December 2005. After the death of Pittsburgh mayor Bob O'Connor, Ravenstahl became the mayor, per the city's charter, on September 1, 2006. He later won a special election in 2007, and a regular election in 2009.

Ravenstahl's father, Robert P. Ravenstahl Jr., is a district magistrate on the Northside, and head coach for the North Catholic High School football team. His grandfather, Robert P. Ravenstahl Sr., represented the 20th legislative district as a state representative, was a Democratic ward leader in the North Side, and was defeated in the 1976 Democratic primary by a young Tom Murphy, who would go on to become mayor himself. Ravenstahl's mother is currently a teacher's aide with the Allegheny Intermediate Unit. Ravenstahl is the eldest of three brothers including Adam Ravenstahl, a member of the Pennsylvania House of Representatives.