William Sharp (12 September 1855 – 12 Desember 1905) adalah seorang penulis puisi dan biografi sastra Skotlandia. Sejak 1893, ia juga menulis dengan nama penaFiona Macleod, sebuah pseudonim yang nyaris dirahasiakan sepanjang masa hidupnya.[1] Ia juga merupakan penyunting puisi Ossian, Walter Scott, Matthew Arnold, Algernon Charles Swinburne dan Eugene Lee-Hamilton.
"William Sharp (Fiona Macleod): A Memoir" (1910, 1912) Elizabeth A. Sharp
William Sharp: "Fiona Macleod", 1855–1905 (1970) Flavia Alaya
The Sexual Tensions of William Sharp: A Study of the Birth of Fiona Macleod, Incorporating Two Lost Works, 'Ariadne in Naxos' and 'Beatrice'" (1996) Terry L. Meyers (Sharp's sexual orientation is a question still to be resolved, but some evidence in William Halloran's edition of Sharp's letters [see below] may corroborate the suggestions by Meyers that the creation of Fiona Macleod in some sense reflected a crisis in Sharp's sexual identity).
In Library of World's Best Literature Ancient and Modern, Thirty Volumes, Edited by Charles Dudley Warner, R. S. Peale and J. A. Hill, publishers, 1897. In Volume 6 is a section (pp. 3403–3450), devoted to Celtic literature, written by William Sharp and Ernest Rhys.