William Henry Milman (1824–1908) was an English rower, clergyman and librarian who was president of the Oxford Union and of Sion College.
Milman took Holy Orders and in 1851 was mentioned in the letters of Thomas Babbington Macaulay with regard to his purchase of clerical vestments.
Milman ordered a long vest of the latest clerical fashion which the tailor referred to as an "M.B waistcoat".
In 1880 he presented to the London and Middlesex Archaeological Society Some account of Sion College and of its library which was later published separately.
[6] Milman remained librarian of Sion College library until his death in Kensington at the age of 83 in 1908.