List of state leaders in 405

See also
List of state leaders in 404 Events of 405 List of state leaders in 406 State leaders by year

This is a list of heads of state, government leaders, and other rulers in the year 405.

Asia

China (Sixteen Kingdoms)
- Eastern Jin - Emperor An, Emperor of Eastern Jin (404-419)
- Later Qin - Yao Xing, Emperor of Later Qin (394-416)
- Later Yan - Murong Xi, Emperor of Later Yan (401-407)
- Northern Liang - Juqu Mengxun, Prince of Northern Liang (401-433)
- Northern Wei - Emperor Daowu, Emperor of Northern Wei (386-409)
- Southern Liang - Tufa Rutan, Prince of Southern Liang (402-414)
- Western Liang - Li Gao, Prince of Western Liang (400-417)
- Southern Yan
  - Murong De. Prince of Southern Yan (398-405)
  - Murong Chao. Prince of Southern Yan (405-410)
Gupta Empire – Chandragupta II, Gupta Emperor of India (375-414)
Japan (Yamato period) - Emperor Richū, Emperor of Japan (c.400-c.405)
Korea (Three Kingdoms Period)
- Baekje -
  1. Asin, King of Baekje (392-405)
  2. Jeonji, King of Baekje (405-420)
- Gaya - Isipum, King of Gaya (346-407)
- Goguryeo - Gwanggaeto the Great, King of Goguryeo (391-413)
- Silla - Silseong, King of Silla (402-417)

Armenia - Vramshapuh, King of Armenia (389-417)
Georgia (Caucasian Iberia) - Trdat, King of Iberia (394-406)
Ireland -
1. Niall Noigíallach, High King of Ireland (378-405)
2. Dathí, High King of Ireland (405-428)
Visigoths - Alaric I, King of the Visigoths (395-410)
Western Roman Empire -
- Honorius, Western Roman Emperor (395-423)
- Stilicho, Magister militum (395-408)