Millennium:	1st millennium BC
Centuries:	4th century BC – 3rd century BC – 2nd century BC
Decades:	230s BC 220s BC 210s BC – 200s BC – 190s BC 180s BC 170s BC
Years:	206 BC 205 BC 204 BC – 203 BC – 202 BC 201 BC 200 BC

203 BC by topic
Politics
State leaders – Sovereign states
Birth and death categories
Births – Deaths
Establishments and disestablishments categories
Establishments – Disestablishments
v t e

203 BC in other calendars
Gregorian calendar	203 BC CCII BC
Ab urbe condita	551
Ancient Egypt era	XXXIII dynasty, 121
- Pharaoh	Ptolemy V Epiphanes, 1
Ancient Greek era	144th Olympiad, year 2
Assyrian calendar	4548
Balinese saka calendar	N/A
Bengali calendar	−795
Berber calendar	748
Buddhist calendar	342
Burmese calendar	−840
Byzantine calendar	5306–5307
Chinese calendar	丁酉年 (Fire Rooster) 2494 or 2434 — to — 戊戌年 (Earth Dog) 2495 or 2435
Coptic calendar	−486 – −485
Discordian calendar	964
Ethiopian calendar	−210 – −209
Hebrew calendar	3558–3559
Hindu calendars
- Vikram Samvat	−146 – −145
- Shaka Samvat	N/A
- Kali Yuga	2898–2899
Holocene calendar	9798
Iranian calendar	824 BP – 823 BP
Islamic calendar	849 BH – 848 BH
Javanese calendar	N/A
Julian calendar	N/A
Korean calendar	2131
Minguo calendar	2114 before ROC 民前2114年
Nanakshahi calendar	−1670
Seleucid era	109/110 AG
Thai solar calendar	340–341
Tibetan calendar	阴火鸡年 (female Fire-Rooster) −76 or −457 or −1229 — to — 阳土狗年 (male Earth-Dog) −75 or −456 or −1228

Year 203 BC was a year of the pre-Julian Roman calendar.

Events

The Roman general, Publius Cornelius Scipio makes a surprise attack on the Carthaginians camp and destroys it. He defeats the army in the Battle of the Great Plains. The Numidian king, Syphax, and the Carthaginian leader, Hasdrubal Gisco, both escape.
The Roman general, Gaius Laelius, and Rome's Numidian ally, Masinissa, follow Syphax towards Cirta, the Numidian capital. Syphax is captured and later dies in the Italian town of Alba Fucens.
Masinissa becomes king of both the Massyli and the Massaesyli tribes in Numidia. He remains a loyal ally to the Romans.
Hasdrubal Gisco gets the Carthaginians to form a new army and to send for Hannibal to return home from Italy. Hannibal finally leaves Italy and returns to Carthage.
The Carthaginian general, Mago Barca, is defeated and wounded by the Romans in a battle in Cisalpine Gaul. He dies of his wounds on the return voyage to Carthage.
An agreement between Carthage and Rome is made. The Carthaginian armies accept Scipio's severe terms. But Hannibal gets the army ready for battle.

Deaths

Mago Barca, Carthaginian general during the Second Punic War against Rome who has accompanied his brother Hannibal on the invasion of Italy (b. 243 BC)
Fabius Maximus Cunctator, Roman general and statesman (b. c. 275 BC)
Syphax, Numidian king allied with the Carthaginians during the Second Punic War against Rome

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