Mary Isabella Hales Horne (November 20, 1818 – August 25, 1905) was a prominent leader in many different capacities in the Church of Jesus Christ of Latter-day Saints.

[5] They gathered with the LDS saints in Missouri where they faced persecution, and later relocated to Quincy, Illinois, and Nauvoo.

[7] Horne served as treasurer for the Central Board of Relief Society beginning on July 1, 1880 and was released in 1901.

[4] In 1876, she was elected as vice-president of the Utah Silk Association organized by Brigham Young and headed by other prominent LDS church leaders including Zina D. H. Young, General Relief Society president.

[8] For the World's fair, Horne was chairman of the philanthropies and charities committee of the women of Utah.