John Millard Dunn (5 January 1865 – 3 March 1936) was an Australian church organist and choirmaster, notable for his long-standing tenure at St Peter's Cathedral, Adelaide, where he served for 44 years.
His early musical training included piano studies under Miss Francis of Glenelg, and later, with E. Smith-Hall and Herr Boehm.
[3] Appointed organist at the cathedral on 1 November 1891, he officiated at the inauguration of the new organ in 1930;[4] the last service at which he presided occurred just a week before his death at the age of 71 years.
Dunn was a successful teacher of the organ; two of his students, Arthur H. Otto and Horace Weber, gained recognition in their own right.
A newspaper once nominated him as one of the 15 notable South Australian musicians of the late 19th and early 20th centuries, alongside figures like Frederick Bevan, Charles Cawthorne, E. Harold Davies, Thomas Grigg, and others.