- Historical Dictionary of Kazakhstan
- Historical Dictionary of Kenya
- Historical Dictionary of Kosovo
- Historical Dictionary of Laos
- Historical Dictionary of Lesotho
- Historical Dictionary of Liberia
- Historical Dictionary of Librarianship
- Historical Dictionary of Malawi
- Historical Dictionary of Mali
- Historical Dictionary of Mauritania
- Historical Dictionary of Medieval China
- Historical Dictionary of Medieval India
- Historical Dictionary of Medieval Russia
- Historical Dictionary of Mesoamerica
- Historical Dictionary of Mesopotamia
- Historical Dictionary of Mexico
- Historical Dictionary of Middle Eastern Intelligence
- Historical Dictionary of Modern China (1800-1949)
- Historical Dictionary of Modern Greece
- Historical Dictionary of Modern Japanese Literature and Theater
- Historical Dictionary of Moldova
- Historical Dictionary of Mongolia
- Historical Dictionary of Mozambique
- Historical Dictionary of NATO and Other International Security Organizations
- Historical Dictionary of Naval Intelligence
- Historical Dictionary of Niger
- Historical Dictionary of North Macedonia
- Historical Dictionary of Nuclear, Biological and Chemical Warfare
- Historical Dictionary of Nuclear, Biological, and Chemical Warfare
- Historical Dictionary of Panama
- Historical Dictionary of Paraguay
- Historical Dictionary of Peru
- Historical Dictionary of Poland
- Historical Dictionary of Poland 1945-1996
- Historical Dictionary of Polynesia
- Historical Dictionary of Portugal
- Historical Dictionary of Prophets in Islam and Judaism
- Historical Dictionary of Republic of the Congo
- Historical Dictionary of Revolutionary America
- Historical Dictionary of Russian and Soviet Foreign Policy
- Historical Dictionary of Russian Music
- Historical Dictionary of Russian Theatre
- Historical Dictionary of Scandinavian Cinema
- Historical Dictionary of Scandinavian Literature and Theater
- Historical Dictionary of Science and Technology in Modern China
- Historical Dictionary of Sexspionage
- Historical Dictionary of Sierra Leone
- Historical Dictionary of Signals Intelligence
- Historical Dictionary of Sikhism
- Historical Dictionary of Singapore
- Historical Dictionary of Slavery and Abolition
- Historical Dictionary of Somalia
- Historical Dictionary of South Africa
- Historical Dictionary of South American Cinema
- Historical Dictionary of Spanish Cinema
- Historical Dictionary of Sri Lanka
- Historical Dictionary of Syria
- Historical Dictionary of Taiwan Cinema
- Historical Dictionary of Terrorism
- Historical Dictionary of the 1940s
- Historical Dictionary of the American Frontier
- Historical Dictionary of the Anglo-Boer War
- Historical Dictionary of the Arab Uprisings
- Historical Dictionary of the Arab-Israeli Conflict
- Historical Dictionary of the Baha'i Faith
- Historical Dictionary of the Beat Movement
- Historical Dictionary of the Bedouins
- Historical Dictionary of the Bengalis
- Historical Dictionary of the British and Irish Civil Wars, 1637-1660
- Historical Dictionary of the British Empire
- Historical Dictionary of the British Monarchy
- Historical Dictionary of the Catalans
- Historical Dictionary of the Central African Republic
- Historical Dictionary of the Chechen Conflict
- Historical Dictionary of the Chinese Communist Party
- Historical Dictionary of the Chinese Environment
- Historical Dictionary of the Civil War
- Historical Dictionary of the Civil War and Reconstruction
- Historical Dictionary of the Clinton Era
- Historical Dictionary of the Contemporary United Kingdom
- Historical Dictionary of the Crimean War
- Historical Dictionary of the Czech State
- Historical Dictionary of the Democratic Republic of the Congo
- Historical Dictionary of the Dominican Republic
- Historical Dictionary of the Druzes
- Historical Dictionary of the Eisenhower Era
- Historical Dictionary of the Enlightenment
- Historical Dictionary of the Etruscans
- Historical Dictionary of the Gilded Age
- Historical Dictionary of the Green Movement
- Historical Dictionary of the Gulf Arab States
- Historical Dictionary of the Gypsies (Romanies)
- Historical Dictionary of the Ismailis
- Historical Dictionary of the Jews
- Historical Dictionary of the Korean War
- Historical Dictionary of the League of Nations
- Historical Dictionary of the Nixon-Ford Era
- Historical Dictionary of the Progressive Era
- Historical Dictionary of the Puritans
- Historical Dictionary of the Reformation and Counter-Reformation
- Historical Dictionary of the Republic of Cape Verde
- Historical Dictionary of the Republic of Guinea-Bissau
- Historical Dictionary of the Republic of Macedonia
- Historical Dictionary of the Roosevelt-Truman Era
- Historical Dictionary of the Russian Civil Wars, 1916-1926
- Historical Dictionary of the Russian Revolution
- Historical Dictionary of the U.S. Congress
- Historical Dictionary of the U.S. Maritime Industry
- Historical Dictionary of the United States Navy
- Historical Dictionary of the Vikings
- Historical Dictionary of the War in Vietnam
- Historical Dictionary of the War of 1812
- Historical Dictionary of the Zulu Wars
- Historical Dictionary of Tibet
- Historical Dictionary of Togo
- Historical Dictionary of Tokyo
- Historical Dictionary of Trinidad and Tobago
- Historical Dictionary of Tunisia
- Historical Dictionary of U.S. Diplomacy during the Cold War
- Historical Dictionary of U.S. Diplomacy from World War I through World War II
- Historical Dictionary of U.S. Diplomacy since the Cold War
- Historical Dictionary of United States Political Parties
- Historical Dictionary of United States-Africa Relations
- Historical Dictionary of United States-China Relations
- Historical Dictionary of United States-Japan Relations
- Historical Dictionary of United States-Latin American Relations
- Historical Dictionary of United States-Russian/Soviet Relations
- Historical Dictionary of United States-Southeast Asia Relations
- Historical Dictionary of Venezuela
- Historical Dictionary of Vietnam
- Historical Dictionary of World War I Intelligence
- Historical Dictionary of World War II Intelligence