Mack Wilberg (born February 20, 1955) is an American composer, arranger, conductor, and choral clinician who has served as music director of the Tabernacle Choir at Temple Square since 2008.

Wilberg studied music at Brigham Young University (BYU) and the University of Southern California before returning to BYU as a professor of music. He was the associate director of the choir and music director of the Temple Square Chorale for The Church of Jesus Christ of Latter-day Saints (LDS Church) from May 1999 until his appointment as the Tabernacle Choir's director on March 28, 2008. Wilberg is a noted composer and arranger, and his works are published by Oxford University Press