John Henry Reynolds (8 February 1842 – 17 July 1927) was a British educationist and administrator, particularly associated with the development of the Manchester educational institution that was to go on to become UMIST.

An able and active administrator, and an enthusiastic and persuasive advocate, Reynolds grasped the city's appetite for more effective vocational education and planned and led the relaunch of the institution as the Manchester Technical School in 1882.

Reynolds took a role in the city authority as director of technical instruction and set out to survey the superior establishments in Germany and Switzerland and the thriving schools of the United States and Canada.

In 1904, the newly-autonomous Victoria University of Manchester recognised the status of many of the courses that Reynolds had developed by establishing a faculty of technology at the Institute.

However, consistent with Reynolds' radical sympathies, the bulk of the Institute's work was still devoted to vocational, rather than academic, education.