Morris David Rosenbaum (July 11, 1831 – August 10, 1885) was a prominent businessman in early Utah and one of the few Jewish people to join the Church of Jesus Christ of Latter-day Saints (LDS Church) during the 19th century. Rosenbaum was born in Fordon which was then part of the Grand Duchy of Posen. In 1868, Rosenbaum married Abigail H. Snow, a daughter of Lorenzo Snow and Harriet Amelia Squires. They had at least seven children. Rosenbaum died at Mink Creek, in present-day Franklin County, Idaho and was buried in Brigham City.