David R. Lyon (1864-1940) was a printer and print company manager in Utah.

David R. Lyon, son of pioneer poet John Lyon and Caroline Holland, was born in Salt Lake City on August 16, 1864. He was educated in the Twentieth Ward school by Karl G. Maeser. He married Mary Cairns Lyon in the Logan Temple on September 30, 1885 and raised ten children with her (one son died in infancy). His life's work, a 63-year career, was in the printing business, which he began at age 12 by working as a typesetter at the old Salt Lake Herald. He was also President of the Magazine Printing Company and member of the Printer Managers' Association.

David was an active member of The Church of Jesus Chris of Latter-day Saints, serving at different times as first assistant in the Salt Lake Stake Sunday School superintendency (1886-1891), president of the Twentieth Ward Mutual Improvement Association (twelve years), bishop of the Twentieth Ward, bishop of the Ensign Ward (1913-1926); and, at the time of his death, he was serving as patriarch of the Ensign Stake (1926-1940). He died of a heart attack at a daughter's home in Temple City, California on June 4, 1940.