His father was Alexander Ireland. Educated at Manchester Grammar School and the University of Berlin, Alleyne Ireland visited Australia, Canada, India, Burma, the Malay Peninsula, Java, Borneo, French Indo-China, the Philippines, the West Indies and British Guiana. In 1902–1904 for the Times of London he wrote twelve articles on British colonial administration in the tropics. He lectured at the University of Cornell, the University of Chicago and the Lowell Institute and was on the staff of the New York World.
- Demerariana. Baldwin. 1897; 104 pages
- Tropical Colonization. 1899.
- "The Cohesive Elements of British Imperialism". The Outlook 63: 1011–1015. 1899.
- The Anglo-Boer Conflict. 1900.
- Some Conditions of Success in Colonization. The Independent 52. 1900. pp. 1593–1597.
- "A Few Facts about the Colonies of the Great Powers". McClure's Magazine 14: 334–338. 1900.
- China and the Powers. 1901.
- The Far Eastern Tropics. 1905.
- The Province of Burma. 1907.
- Joseph Pulitzer: Reminiscences of a Secretary. 1914.
- Beating 'em to it; or, The sultan and the sausages, by Chester Cornish [pseud.] Illustrations by Alfred J. Frueh. A. A. Knopf. 1917; 120 pages
- The Truth about the Jameson raid, by John Hays Hammond as related to Alleyne Ireland. 1918.
- Democracy and the Human Equation. 1921.
- Can we save constitutional government? A memorandum. 1922; 16 page pamphlet
- New Korea. E. P. Dutton. 1926; 354 pages
- "W. Alleyne Ireland, Author, Traveler". The Brooklyn Daily Eagle. 24 December 1951. p. 7.
- H. M. Ayres, ed. The Reader’s Dictionary of Authors. 1917
- "Ireland, Alleyne". Who's Who: p. 1275. 1919.