Diplomats — reference index 14
- Wei Tao-Ming — China
- Welile Nhlapo — South Africa
- Wellington Koo — China
- Wentzel Christoffel du Plessis — South Africa
- Wilhelm af Wetterstedt — Sweden
- Wilhelm Grewe — Germany
- Wilhelm Wachtmeister — Sweden
- Willem Christiaan Naudé — South Africa
- William Henry Harrison
- William Henry Seward
- William Howard Taft
- William Jennings Bryan
- William L. Marcy
- William M. Evarts
- William McKinley
- William P. Rogers
- William R. Day
- William Stuart — United Kingdom
- Winston Churchill
- Wolfgang Ischinger — Germany
- Wollmar Boström — Sweden
- Wong Lin Ken — Singapore
- Woodrow Wilson
- Wu Tingfang — China
- Wu Xi — China
- Xie Feng — China
- Xu Shoupeng — China
- Xu Xueyuan — China
- Yakichirō Suma — Japan
- Yang Jiechi — China
- Yang Sung-chul — Korea
- Yang You-chan — Korea
- Yang Yu — China
- Yaroslav Brisiuck — Ukraine
- Yasser Reda — Egypt
- Yechiel (Michael) Leiter — Israel
- Yegor Krehmer — Russia
- Yerzhan Ashikbayev — Kazakhstan
- Yi Beom-jin — Korea
- Yi Chae-yeon — Korea
- Yi Eui-dam — Korea
- Yi Ha-young — Korea
- Yi Hyeon-jik — Korea
- Yi Seung-su — Korea
- Yi Wan-yong — Korea
- Yilma Deressa — Ethiopia
- Yitzhak Rabin — Israel
- Yngve Möller — Sweden
- Yoshio Ōkawara — Japan
- Yousef Al Otaiba — UAE
- Yuli Vorontsov — Russia
- Yulian Bachynsky — Ukraine
- Yung Kwai — China
- Yuri Dubinin — Russia
- Yuri Ushakov — Russia
- Yuriy Shcherbak — Ukraine
- Yusuf Ziya Paşa — Türkiye
- Zachary Taylor
- Zairin Zain — Indonesia
- Zalman Shoval — Israel
- Zewde Gebre Hiwot — Ethiopia
- Zhang Wenjin — China
- Zhang Yesui — China
- Zhang Yinhuan (Chang Yen Hoon) — China
- Zheng Zaoru (Cheng Tsao Ju) — China
- Zheng Zeguang — China
- Zhi Gang
- Zhou Enlai
- Zhou Wenzhong — China
- Zhu Qizhen — China
- Zulfiqar Ali Khan — Pakistan