Leroy J. Robertson (1896-1971) was a prominent Mormon composer, faculty of the Brigham Young University School of Music, and member of the General Music Committee of The Church of Jesus Christ of Latter-day Saints.

Leroy Robertson was born December 12, 1896, in Fountain Green, Sanpete County, Utah. His passion for music began as a child, and he began teaching himself the violin when he received one as a present from his father. Robertson's formal musical training began in primary school and continued until he graduated from Brigham Young University High School in Provo in 1910. Shortly after becoming a violin instructor in the Utah valley, he was drafted in 1918 for World War I, though he never saw combat. In 1920, he travelled to Boston to study at the New England Conservatory and graduated with honors in June 1923 with diplomas in violin, piano, composition, and public school music. Robertson's professional teaching career soon followed at North Cache High School in 1923, Pleasant Grove High School in 1924, and Brigham Young University in 1925 where the School of Music thrived under Robertson's teaching. In spite of his busy teaching career, he increased his education by completing his BA and MA from BYU in the 1930's, studied with Ernest Bloch in 1930 at the San Fransisco Conservatory, and commenced doctoral studies at the University of Southern California in 1936 with Arnold Schoenberg. Robertson was appointed to the General Music Committee of The Church of Jesus Christ of Latter-day Saints in 1938. In 1948, he finished teaching at BYU and relocated to the University of Utah where he worked with Maurice Abravanel and the Utah Symphony to augment Utah's musical culture, laying the foundations for Opera West, until he was forced to retire in 1962. Leroy Robertson died July 24, 1971, of heart failure.