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.
Wilberg was raised in Castle Dale, Utah, and served as an LDS missionary in South Korea where he was part of New Horizons, a vocal group made up of LDS Church missionaries.
Wilberg attended Brigham Young University (BYU) after finishing his missionary service, and earned a bachelor's degree in piano performance and composition in 1979. He then did graduate study in choral music at the Thornton School of Music at the University of Southern California, earning both Master of Music and Doctor of Musical Arts degrees, with a doctoral dissertation researching works written for chorus and piano.
Wilberg was a professor of music at BYU from 1984 to 1999, where he directed the Men's Chorus and Concert Choir. At BYU, he was a member of the American Piano Quartet, which toured internationally and commissioned many original works, with Wilberg creating many of its arrangements himself.
Wilberg's numerous choral compositions and arrangements are performed and recorded by choral organizations throughout the world. For many of the works he has written/arranged for the Choir, public performances have involved guests artists invited by the Choir, including Renée Fleming, Frederica von Stade, Bryn Terfel, the King’s Singers, Audra McDonald, David Archuleta, Natalie Cole, Brian Stokes Mitchell, Kristin Chenoweth, Madeleine Albright, Walter Cronkite and Claire Bloom. In 2006, he was awarded the Brock Commission from the American Choral Directors Association.
Wilberg's father was part owner of the family's coal mine but was killed in a 1964 mining accident, well before the 1984 fire.
Wilberg and his wife, Rebecca, are the parents of four children.