221 BC

Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	250s BC 240s BC 230s BC – 220s BC – 210s BC 200s BC 190s BC
Years:	224 BC 223 BC 222 BC – 221 BC – 220 BC 219 BC 218 BC

221 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments

**221 BC in other calendars**
Gregorian calendar	221 BC
Ab urbe condita	533
Armenian calendar	N/A
Bahá'í calendar	-2064 – -2063
Bengali calendar	-813
Berber calendar	730
Buddhist calendar	324
Burmese calendar	-858
Byzantine calendar	5288 – 5289
Chinese calendar	[[Sexagenary cycle\|]]年 (2416/2476) — to — [[Sexagenary cycle\|]]年 (2417/2477)
Coptic calendar	-504 – -503
Ethiopian calendar	-228 – -227
Hebrew calendar	3540 – 3541
Hindu calendars
- Bikram Samwat	-164 – -163
- Shaka Samvat	N/A
- Kali Yuga	2881 – 2882
Holocene calendar	9780
Iranian calendar	842 BP – 841 BP
Islamic calendar	868 BH – 867 BH
Japanese calendar
Korean calendar	2113
Thai solar calendar	323

Events

The Carthaginian general Hasdrubal is murdered by a Celtic assassin while campaigning to increase the Carthaginian hold on Spain. Following the assassination of Hasdrubal, Hannibal, the son of the Carthaginian general, Hamilcar Barca, is proclaimed commander-in-chief by the army and his appointment is confirmed by the Carthaginian government.
Hannibal immediately moves to consolidate Cathage's control of Spain. He marries a Spanish princess, Imilce, then begins to conquer various Spanish tribes. He fights against the Olcades and captures their capital, Althaea; quells the Vaccaei in the northwest; and, making the seaport of Cartagena (Carthago Nova, the capital of Carthaginian Spain) his base, wins a resounding victory over the Carpetani in the region of the Tagus River.

Egypt's Ptolemy III dies and is succeeded by his son, Ptolemy IV. Sosibius is appointed by Ptolemy IV as his Chief Minister and immediately has a great influence over the young king, directing all of the affairs of state.
At Sosibius' direction, Ptolemy IV puts to death in succession his uncle, Lysimachus, his brother Magas, and his mother Berenice II.
King Cleomenes III of Sparta, who is in exile in Egypt, is imprisoned by Ptolemy IV on a charge of conspiracy.

The satrap of Media, Molon, and his brother, Alexander, revolt against Antiochus III, primarily due to their hatred towards Hermeias, Antiochus' chief minister. Molon is able to become master of the Seleucid domains to the east of the Tigris. He is stopped by Antioochus III's forces in his attempts to pass that river. Xenoetas, one of Antiochus' generals, is sent against Molon with a large force, but is surprised by Molon's forces and his whole army is cut to pieces and Xenoetas is killed. The rebel satrap now crosses the Tigris, and makes himself master of the city of Seleucia on the Tigris, together with the whole of Babylonia and Mesopotamia.

Antigonus III dies during a battle against the Illyrians and is succeeded by his young cousin Philip V as King of Macedonia.

Gaius Flaminius Nepos builds a second race track for Rome, the Circus Flaminius.

The state of Qin conquers the state of Qi. The king of Qin unifies China and proclaims himself the First Emperor, as he is the first Chinese sovereign able to rule the whole country, thus ending the Warring States Period. He is known by historians as Qin Shi Huang.
The Chinese bronze age ends (approximate date).

Ptolemy III, King of Egypt, who has reunited Egypt and Cyrenaica and successfully waged the Third Syrian War against the Seleucid kingdom
Hasdrubal, Carthaginian general and son-in-law of Hamilcar Barca (assassinated)
Antigonus III Doson, King of Macedon from 227 BC (b. 263 BC)
Berenice II, queen of Egypt, daughter of Magas, King of Cyrenaica (in modern Libya), whose marriage to Ptolemy III Euergetes has reunited her country with Egypt (b. c. 267 BC)
Lucius Caecilius Metellus, Roman consul and general during the First Punic War (b. c. 290 BC)