| W. A. P. | Walter Alison Phillips, M.A.- Formerly Exhibitioner of Merton College and Senior Scholar of St John’s College, Oxford. Author of Modern Europe; &c.
| | Sir; Spain: History (in part); States-General; Stole (in part). |
| W. C. D. W. | William Cecil Dampier Whetham, M.A., F.R.S.- Fellow and Tutor of Trinity College, Cambridge. Author of Theory of Solution; Recent Development of Physical Science; The Family and the Nation; &c.
| | Solution. |
| W. E. G. | Sir William Edmund Garstin, G.C.M.G.- British Government Director, Suez Canal Co. Formerly Inspector-General of Irrigation, Egypt. Adviser to the Ministry of Public Works in Egypt, 1904-1908.
| | Sobat (in part). |
| W. Ho. | Wynnard Hooper, M.A.- Clare College, Cambridge. Financial Editor of The Times, London.
| | Statistics; Stock Exchange. |
| W. Hu. | Rev. William Hunt, M.A., Litt.D.- President of the Royal Historical Society, 1905-1909. Author of History of the English Church, 597-1666; The Church of England in the Middle Ages; &c.
| | Stubbs, William. |
| W. L. C.* | William Lee Corbin, A.M.- Associate Professor of English, Wells College, Aurora, New York State.
| | Sparks, Jared. |
| W. L. G. | William Lawson Grant, M.A.- Professor of Colonial History, Queen’s University, Kingston, Canada. Formerly Beit Lecturer in Colonial History, Oxford University. Editor of Acts of the Privy Council (Canadian Series).
| | Strathcona and Mount Royal, Lord. |
| W. M. | William Minto, M.A.- See the biographical article: Minto, William.
| | Spenser, Edmund (in part); Steele, Sir Richard (in part); Sterne, Laurence (in part). |
| W. MacC. | Sir William MacCormac, Bart.- See the biographical article: MacCormac, Sir William, Bart.
| | Simon, Sir John. |
| W. McD. | William McDougall, M.A.- Wilde Reader in Mental Philosophy in the University of Oxford. Formerly Fellow of St John’s College, Cambridge.
| | Subliminal Self. |
| W. M. F. P. | William Matthew Flinders Petrie, F.R.S., D.C.L., Litt.D.- See the biographical article: Petrie, W. M. Flinders.
| | Sinai: The Peninsula. |
| W. M. R. | William Michael Rossetti.- See the biographical article: Rossetti, Dante Gabriel.
| | Signorelli, Luca; Sodoma, Il. |
| W. M. Ra. | Sir William Mitchell Ramsay, LL.D., D.C.L., D.Litt.- See the biographical article: Ramsay, Sir W. Mitchell.
| | Smyrna (in part). |
| W. N. S. | William Napier Shaw, M.A., LL.D., D.Sc., F.R.S.- Director of the Meteorological Office, London. Reader in Meteorology in the University of London. President of Permanent International Meteorological Committee. Member of Meteorological Council, 1897-1905. Hon. Fellow of Emmanuel College, Cambridge. Fellow of Emmanuel College, 1877-1906; Senior Tutor, 1890-1899. Joint author of Text Book of Practical Physics; &c.
| | Squall. |
| W. W. F.* | William Warde Fowler, M.A.- Fellow of Lincoln College, Oxford. Sub-rector, 1881-1904. Gifford Lecturer, Edinburgh University, 1908. Author of The City-State of the Greeks and Romans; The Roman Festivals of the Republican Period; &c.
| | Silvanus. |