Milton Henry Hardy (September 26, 1844 – August 23, 1905) was an American educator and was the founder of and a member of the inaugural general superintendency of the Young Men's Mutual Improvement Association (YMMIA) of the Church of Jesus Christ of Latter-day Saints (LDS Church).

Beginning in 1875, church president Brigham Young asked Hardy, John Henry Smith, and B. Morris Young to tour the wards of the church and establish YMMIA programs in each of them.

Hardy held a doctorate degree in biology and was one of the first instructors at Brigham Young Academy (BYA) in Provo, Utah Territory.

From 1876 to 1888 and from 1891 to 1896, Hardy taught physiology and biology at BYA, and was an assistant principal under Karl G. Maeser.

Hardy served as Superintendent of the Utah State Insane Asylum from 1896 until 1905; he resigned in June 1905 due to health problems.