Scott McClellan (born February 14, 1968) is a former White House Press Secretary (2003–06) for President George W. Bush, and author of a controversial book about the Bush Administration titled What Happened. He replaced Ari Fleischer as press secretary in July 2003 and served until May 10, 2006. McClellan was the longest serving press secretary under George W. Bush.

Born in Austin, Texas, McClellan is the youngest son of Carole Keeton Strayhorn, former Texas State Comptroller and former 2006 independent Texas gubernatorial candidate, and attorney Barr McClellan. McClellan's brother Mark headed the Centers for Medicare and Medicaid Services and was formerly Commissioner for the Food and Drug Administration. McClellan is the grandson of the late W. Page Keeton, longtime Dean of the University of Texas School of Law and renowned expert in tort law. He married Jill Martinez in November 2003. They have one son.

McClellan graduated from Austin High School in 1986. He was a top ranked tennis player in high school and served as student council president. He later graduated from the The University of Texas at Austin, where he was president of Sigma Phi Epsilon and a member of the tennis team in his early college years. He served as campaign manager for three of his mother's successful campaigns for statewide office. In addition, he worked on political grassroots efforts and was the Chief of Staff to a Texas State Senator.