3,591 selected
- Not filled in
- William IV of Utrecht (1747-1751)
- William IX of Hanau-Münzenberg (1764-1803)
- William Jefferson Clinton of the United States (1993-2001)
- William Livingston van New Jersey (1776-1790)
- William Louis of Groningen (1584-1620)
- William McKinley of the United States (1897-1901)
- William of Orange of Holland and Zeeland (1572-1584)
- William of Orange of Utrecht (1577-1584)
- William Richard Tolbert Jr. of Liberia (1971-1980)
- William Tubman of Liberia (1944-1971)
- William V of Gelderland (1751-1795)
- William V of Groningen and Ommelanden (1751-1795)
- William V of Overijssel (1751-1795)
- William V of Utrecht (1751-1795)
- William VIII of Hesse-Kassel (1751-1760)
- Willy Ritschard van Zwitserland (1978)
- Willy Spühler of Switzerland (1963,1968)
- Win Maung of Burma (1957-1962)
- Wojciech Jaruzelski of Poland (1985-1990)
- Wolf Dietrich von Raitenau, Salzburg (1587-1612)
- Wolfgang Larrazábal van Venezuela (1958-1959)
- Wolter von Plettenberg of Livonia (1494-1535)
- Wu (Liang) van China (502-557)
- Wu Sangui van China - Qing Rebel (1674-1678)
- Wu Shifan van China - Qing Rebel (1678-1681)
- Wu Zong van China (1308-1311)
- Wudi van China (140-87)
- Xanana Gusmão van Oost-Timor (2002-2007)
- Xaver van Saksen-Albertine (1763-1768)
- Xavier Espot Zamora of Andorra (2019-present)
- Xerxes I (486-465 BC)
- Xerxes II - Artaxerxes III (375-330 BC)
- Xi Jinping van China (2013-heden)
- Xianfeng of China (1851-1861)
- Xiang Zong 1206-1211
- Xiao Zhuang (Bei Wei) van China (528-530)
- Xiaozong of China (1163-1190)
- Xu Shichang van China (1918-1922)
- Xuan (Chen) van China 569-582)
- Xuantong of China (1908-1924)
- Yahya Jammeh of Gambia (1994-2017)
- Yahya Khan of Pakistan (1969-1971)
- Yahya Petra ibni Ibrahim of Malaysia (1975-1979)
- Yakov Sverdlov van de SFSR (1917-1919)
- Yakubu Gowon van Nigeria (1966-1975)
- Yang Shangkun van China (1988-1993)
- Yashwant Roa II van Indore (1926-1948)
- Yayi Boni of Benin (2006-2016)
- Ye Jianying van China (1978-1983)
- Yen Chia-kan of Taiwan (1975-1978)
- Yeoh Ghim Seng of Singapore (23-11-1970 - 2-1-1971, 12-5-1981 - 23-10-1981, 29-5-1985 - 2-9-1985)
- Yevgeny Shevchuk of Transnistria (2011-2016)
- Yi Hyong of Korea (1864–1897)
- Yingzong van China (1064-1067)
- Yitzhak Navon of Israel (1978-1983)
- Yongjo van Korea (1725-1777)
- Yongle van China (1403-1424)
- Yongzheng van China (1723-1735)
- Yoshihito of Japan (1912-1926)
- Yoweri Museveni van Uganda (1986-heden)
- Yuan Shikai van China (1912-1916)
- Yumjaagiin Tsedenbal of Mongolia (1974-1984)
- Yun Bo-seon from South Korea (1960-1962)
- Yung Hi van Korea (1907-1910)
- Yusef of Morocco (1912-1927)
- Yusof bin Ishak van Singapore (1965-1970)
- Zachary Taylor of the United States (1849-1850)
- Zakir Hussain van India (1967-1969)
- Zalman Shazar van Israël (1963-1973)
- Zaman Shah Durrani of Afganistan (1793-1801)
- Zayed bin Sultan Al Nahyan van de Verenigde Arabische Emiraten (1971-2004)
- Zeljka Cvijanovic of Bosnia and Herzegovina (2022-2023)
- Zeljko Komsic of Bosnia en Herzegovina (2006-2014, 2018-present)
- Zenon Noriega Agüero van Peru (1950)
- Zhang Xiangzong van China (1644-1647)
- Zhang Zong van China (1190-1209)
- Zhenzong van China (998-1022)
- Zhezong van China (1086-1100)
- Zhu De van China (1975-1976)
- Zhu Yuanzhang (1361-1368)
- Ziaur Rahman van Bangladesh (1977-1981)
- Zillur Rahman van Bangladesh (2009-2013)
- Zine El Abidine Ben Ali of Tunisia (1987-2011)
- Zivco Radisic van Bosnië en Herzegovina (1998-2002)
- Zjeljoe Zjelev of Bulgaria (1990-1997)
- Zog I, Skanderbeg III van Albanië (1928-1939)
- Zoltán Tildy van Hongarije (1946-1948)
- Zoran Lilic van Joegoslavië (1993-1997)
- Zoran Milanovic of Croatia (2020–present)
- Zulfikar Ali Bhutto van Pakistan (1971-1973)
- Zuzana Caputová of Slovakia (2019-present)