| W. F.* | Rev. William Fairweather, M.A., D.D.- Minister of Dunnikier United Free Church, Kirkcaldy, N.B. Author of Maccabees (Cambridge Bible for Schools); The Background of the Gospels; &c.
|  | Maccabees;
Maccabees, Books of. |
| W. Ho. | Wynnard Hooper, M.A.- Clare College, Cambridge. Financial Editor of The Times, London.
|  | Market. |
| W. H. F. | Sir William Henry Flower, F.R.S.- See the biographical article: Flower, Sir W. H.
|  | Mammalia (in part); Mammoth (in part);
Mandrill (in part);
Marten. |
| W. J. M. R. | William John Macquorn Rankine, LL.D.- See the biographical article: Rankine, William John Macquorn.
| | Mechanics: Applied (in part). |
| W. L. C.* | William Lee Corbin, A.M.- Associate Professor of English, Wells College, Aurora, New York.
| | Mather, Cotton. |
| W. L. F. | Walter Lynwood Fleming, A.M., Ph.D.- Professor of History in Louisiana State University. Author of Documentary History of Reconstruction; &c.
| | Lynch Law;
McGillivray, Alexander. |
| W. L. G. | William Lawson Grant, M.A.- Professor at Queen’s University, Kingston, Canada. Formerly Beit Lecturer in Colonial History at Oxford University. Editor of Acts of the Privy Council, (“Colonial” series); Canadian Constitutional Development (in collaboration).
| | Mackenzie, William Lyon; Manitoba (in part). |
| W. M. R. | William Michael Rossetti.- See the biographical article: Rossetti, Dante G.
| | Luini; Mantegna;
Martini; Masaccio;
Masolino da Panicale. |
| W. M. Ra. | Sir William Mitchell Ramsay, LL.D., D.C.L.- See the biographical article: Ramsay, Sir William Mitchell.
| | Lycaonia. |
| W. P. C. | William Prideaux Courtney, D.C.L.- See the article: Courtney, L. H., Baron.
| | Marlborough, 1st Duke of. |
| W. R. S. | William Robertson Smith, LL.D.- See the biographical article: Smith, William Robertson.
| | Malachi (in part); Mecca. |
| W. Wn. | William Watson, D.Sc, F.R.S.- Assistant Professor of Physics, Royal College of Science, London. Vice-President of the Physical Society.
| | Magnetograph;
Magnetometer. |
| 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.
| | Mars: Mythology;
Mauretania. |
| W. Y. S. | William Young Sellar, LL.D.- See the biographical article: Sellar, William Young.
| | Martial;
Lucilius (in part);
Lucretius. |