William Patterson McIntire (1813-1882) was an early convert to and missionary for to The Church of Jesus Christ of Latter-day Saints.

William Patterson McIntire was born in Wheatfield, Indiana County, Pennsylvania in 1813, the son of George and Sarah Davis McIntire. At the age of fourteen he was apprenticed to learn the trade of a tailor. After his apprenticeship he traveled, working in Kentucky and Missouri, and finally returning to Pennsylvania. In 1833 he married Anna Patterson (1821-1880), the daughter of William and Margaret Patterson. Shortly thereafter he contracted a disease of the lungs from which he suffered for three years. In 1836 he was baptized a member of the Church of Jesus Christ of Latter-day Saints by Elder Erastus Snow. He received a blessing and was healed of the illness of his lungs. Between 1839 and 1840, he served as a missionary for the Church, working with Elder Snow in the Eastern States. In October 1840, McIntire moved with his family to join the main body of Latter-day Saints at Nauvoo, Illinois. There he worked as a tailor. During this time, he made the acquaintance of many prominent Church leaders, including Joseph Smith. In 1849, McIntire crossed the plains and settled in Salt Lake City. He had a family of ten children, two of whom died in infancy. Having received a call to fulfill a colonizing mission, McIntire moved his family to St. George, Utah, and lived there until his death on 7 January 1882.