Troy Brian Murphy (born May 4, 1980) is an American professional basketball player, currently playing at center and power forward for the NBA's Indiana Pacers. Murphy was born in Morristown, New Jersey but grew up in Sparta located in north west New Jersey. He attended the Delbarton School for four years before moving on to the University of Notre Dame, where he was a two-time consensus All-American before declaring himself for the 2001 NBA Draft.

Murphy was a three-time all-county and two-time All-State performer for the Delbarton School in Morristown and coach Dan Whalen. His breakout year was as a sophomore when he averaged 20.5 points per game and 11.8 rebounds, earning first team all-county honors. He followed up his sophomore year with a successful junior campaign, averaging 23.5 points and 10.5 rebounds and All-State honors. His senior year would be his most successful season as he led Delbarton to a 20–6 record and the state quarterfinals. For the season he averaged 33.0 points per game (on 56.8 percent shooting), to lead the state in scoring along with 14.8 rebounds and 3.2 blocks per game. At the end of the season he was named Morris County Player of the Year by the Newark Star-Ledger and the most valuable player for his team at the prestigious Capital Classic in Washington, D.C..

Murphy played college basketball at the University of Notre Dame.