20th-century spies

lieutenant-general in the British Army, writer, founder and Chief Scout of the Scout Movement (1857-1941)

CIA analyst and Soviet spy (1941–2026)

British spy in the USSR (1919–1963)

Russian-born adventurer and secret agent (1873–1925)

Jewish spy working for the British in World War I (1890–1917)

Ottoman princess

Chief of the Secret Intelligence Service (1859–1923)

British intelligence officer (1876–1947)

Indian revolutionary

British intelligence chief

British spy and writer (1889–1967)

Soviet spy and diplomat (1922–1984)

German diplomat

Polish spy, Miss Poland (1908–2001)

Taiwanese spy

Israeli intelligence officer (1937–2025)