Joseph Don Carlos Young (May 6, 1855 – October 19, 1938) was an American architect and the Church Architect for The Church of Jesus Christ of Latter-day Saints (LDS Church) from 1887 until 1893.
In 1893, the office of Church Architect was dissolved (to be reinstated for a time in the mid 20th century), Young thereafter practiced privately with the LDS Church as a frequent client.
Young practiced as an architect, landscape architect and designer from 1879 to circa 1935.
A preponderance of his work centered on church commissions, or commissions offered him by extended Young family members, or higher echelon church friends.