1890s
- Stewart Menzies (1890–1968), head of MI6 during World War II
- Arthur Batten-Pooll (1891–1971), First World War Victoria Cross
- William Congreve (1891–1916), First World War Victoria Cross
- Walter D'Arcy Hall (1891–1980), Soldier, Member of Parliament
- Edward Bridges, 1st Baron Bridges (1892–1969), Cabinet Secretary, 1938–1945, and Permanent Secretary to the Treasury, 1945–1956
- Wykeham Stanley Cornwallis, 2nd Baron Cornwallis (1892–1982)
- Sir Reginald Graham (1892–1980), First World War Victoria Cross
- J. B. S. Haldane (1892–1964), Professor of Genetics and of Biometry, University College, London, 1933–1957
- Ewart Horsfall (1892–1974), oarsman who competed in the 1912 and 1920 Summer Olympics
- Sir Osbert Sitwell (1892–1969), writer
- HM King Prajadhipok of Siam (1893–1941), King of Siam, 1925–1935
- Oliver Lyttelton, 1st Viscount Chandos (1893–1972), Colonial Secretary, 1951–1954
- Aldous Huxley (1894–1963), novelist
- General Sir Oliver Leese (1894–1978), General Officer Commanding XXX Corps, 1942–1943, GOC Eighth Army, 1943–1944, Commander-in-Chief, Allied Land Forces, South-East Asia, 1944–1945, and General Officer Commanding-in-Chief Eastern Command, 1945–1946
- Harold Macmillan, 1st Earl of Stockton (1894–1986), Chancellor of the Exchequer, 1955–1957, and Prime Minister, 1957–1963
- Peter Warlock (1894–1930), composer and writer on music
- Thomas Corbett, 2nd Baron Rowallan (1895–1977), Chief Scout of the Commonwealth, 1945–1959, and Governor of Tasmania, 1959–1963
- Terence Gray (Wei Wu Wei) (1895–1987), theatrical producer, author
- Geoffrey Madan (1895–1947), anthologist
- Colonel George Edward Younghusband CBE, (1896–1970), Soldier serving WWI & WWII, POW Italy, Vincigliata,
- Sir Frederick Boy Browning (1896–1965), General Officer Commanding I Airborne Corps, 1943–1944
- John Dunville (1896–1917), First World War Victoria Cross
- Sir Henry Segrave (1896–1930), engineer, racing driver, aviator and holder of land speed record
- Anthony Eden, 1st Earl of Avon (1897–1977), Secretary of State for Foreign Affairs, 1935–1938, 1940–1945, 1951–1955, and Prime Minister, 1955–1957
- Arthur Rhys Davids (1897–1917). Royal Flying Corps Distinguished Service Order, Military Cross First World War.
- Julian Royds Gribble (1897–1918), First World War Victoria Cross
- Peter Llewelyn Davies (1897–1960)
- Lieut. Richard Byrd Levett (1897–1917), King's Royal Rifle Corps, killed in action, Irles, France, 14 March 1917
- Lieutenant-General Herbert Lumsden (1897–1945)
- Sir Sacheverell Sitwell (1897–1988)
- General Sir Richard McCreery (1898–1967), General Officer Commanding Eighth Army, Northern Italy, 1944–1945
- Colin Hercules Mackenzie (1898–1986), founder of Force 136
- John Cobb (1899–1952), racing driver and holder of land speed record
- Christopher Hussey (1899–1970), architectural historian and writer
- Thomas Brand, 4th Viscount Hampden (1900–1965)
- HRH Prince Henry, Duke of Gloucester (1900–1974)
- John Fremantle, 4th Baron Cottesloe (1900–1994)
- Michael Mason (1900–1982)
- Walter Runciman, 1st Viscount Runciman of Doxford (1900–1989)
Read more about this topic: List Of Old Etonians Born In The 19th Century