John Wickham Legg (28 December 1843 – 28 October 1921) was an English physician who published on medical subjects, liturgy and ecclesiology.
Having qualified as a member of the Royal College of Surgeons, he was recommended by Jenner for the post of medical attendant to Prince Leopold, Queen Victoria's fourth son, later styled Duke of Albany, a haemophiliac.
Following two attacks of rheumatic fever, Legg resigned his offices in 1887 and gave away his medical books, retiring for the winter to Cannes.
Having developed a taste for this line of work, Legg dedicated his energies, social graces and connections to consolidating it.
[1] Legg's publications continued until the last major work, the edition of the Sarum Missal which he published with Oxford University Press in 1916.