List of state leaders in 421 BC

See also
List of state leaders in 422 BC Events of 421 BC List of state leaders in 420 BC State leaders by year

This is a list of heads of state, government leaders, and other rulers in the year 421 BC.

The column "Title" refers to being of the state in question (e.g. "Emperor" under the heading "Japan" means "Emperor of Japan") unless otherwise stated.

Africa

Carthage

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Hannibal Mago	King	Magonids	440 BC	406 BC

Kush

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Amanineteyerike	King	—	431 BC	405 BC

Middle East and Asia Minor

Armenia

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Ardashir Orontid	King	Orontid dynasty	Second half of the 5th century BC

Cimmerian Bosporus

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Satyrus	King	Spartocids	433 BC	389 BC

Persia

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Darius II	King	Achaemenid dynasty	423 BC	404 BC

At this time, the Persian rulers were also rulers of the following conquered countries:

Lydia (547–330 BC)
Babylonia (539–330 BC)
Egypt (525–404 BC)
Elam (519–330 BC)

Asia

Arakan (Burma)

Mythological monarchs

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Nela Gun	King	Second Danyawaddy	440 BC	399 BC

China

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Weilie	King	Zhou dynasty	425 BC	402 BC	^[1]

Vassal states

Note: Only vassal states where the rulers and their reigning years are known are listed here.

State	Type	Name	Title	Royal house	From	To	Refs
Chu	Sovereign	Jian	King	Mi	431 BC	408 BC	^[2]
Han	Sovereign	Wuzi	Ruler	—	424 BC	409 BC
Jin	Sovereign	You	Duke	Ji	433 BC	416 BC	^[3]
Lu	Sovereign	Yuan	Duke	Ji	436 BC	416 BC	^[4]
Qi	Sovereign	Xuan	Duke	Jiang	455 BC	405 BC	^[5]
Qin	Sovereign	Ling	Duke	Ying	424 BC	415 BC	^[6]
Song	Sovereign	Zhao II	Duke	—	468 BC	404 BC	^[7]
Wei	Sovereign	Wen	Marquis	—	445 BC	396 BC	^[8]
Wey	Sovereign	Huai	Duke	—	425 BC	415 BC	^[9]
Yan	Sovereign	Min	Duke	—	438 BC	415 BC	^[10]
Yue	Sovereign	Weng	King	—	449 BC	412 BC	^[11]
Zhao	Sovereign	Xian	Marquis	—	424 BC	409 BC
Zheng	Sovereign	Xu	Duke	—	422 BC	396 BC	^[12]

Gojoseon (Korea)

Legendary monarchs

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Doguk	King	—	432 BC	413 BC

Japan

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Kōshō	Emperor	—	475 BC	5 August 393 BC

Upatissa Nuwara (Sri Lanka)

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Pandukabhaya	King	Vijaya	437 BC	377 BC

Europe

Athens

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Alcaeus	Archon	—	422 BC	421 BC
Sovereign	Aristion	Archon	—	421 BC	420 BC

Epirus

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Tharrhypas	King	—	430 BC	392 BC

Ireland

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Ailill Caisfiaclach	High King	Milesians	443 BC	418 BC

Macedonia

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Perdiccas II	King	Argead dynasty	448 BC	413 BC

Odrysian Thrace

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Seuthes I	King	—	424 BC	410 BC

Roman Republic

Type	Name	Title	Political group	From	To	Refs
Sovereign	N. Fabius Vibulanus	Consul	—	421 BC
Sovereign	T. Quinctius Capitolinus Barbatus	Consul	—	421 BC

Sparta

Type	Name	Title	Royal house	From	To	Refs
Sovereign	Pleistoanax	King	Agiad	458 BC	409 BC
Sovereign	Agis II	King	Eurypontid	427 BC	401 BC or 400 BC