John Mather

John Mather may refer to:


 * John Mather (artist) (1848–1916), Australian landscape painter
 * John Mather (academic) (fl. 1715-1748), English academic administrator at the University of Oxford
 * John Mather (businessman) (1827–1907), Canadian pioneer in milling
 * John Mather (cricketer) (1821–1870), Australian cricketer
 * John B. Mather (c.1845–1892), Canadian businessman and politician
 * John C. Mather (born 1946), American Nobel Prize–winning astrophysicist and cosmologist
 * John C. Mather (New York politician) (1813–1882), American politician
 * John N. Mather (1942–2017), American mathematician
 * John Perkins Cushing Mather (1816–1891), American politician
 * John T. Mather (1854–1928), American industrialist and philanthropist
 * John Baxter Mather (1853–1940), Scottish-born journalist, newspaper proprietor, painter and art critic in South Australia