Millennium:	1st millennium
Centuries:	6th century 7th century 8th century
Decades:	580s 590s 600s 610s 620s
Years:	600 601 602 603 604 605 606

603 by topic
Leaders
Political entities State leaders Religious leaders
Categories
Births Deaths Establishments Disestablishments

603 in various calendars
Gregorian calendar	603 DCIII
Ab urbe condita	1356
Armenian calendar	52 ԹՎ ԾԲ
Assyrian calendar	5353
Balinese saka calendar	524–525
Bengali calendar	10
Berber calendar	1553
Buddhist calendar	1147
Burmese calendar	−35
Byzantine calendar	6111–6112
Chinese calendar	壬戌年 (Water Dog) 3300 or 3093 — to — 癸亥年 (Water Pig) 3301 or 3094
Coptic calendar	319–320
Discordian calendar	1769
Ethiopian calendar	595–596
Hebrew calendar	4363–4364
Hindu calendars
- Vikram Samvat	659–660
- Shaka Samvat	524–525
- Kali Yuga	3703–3704
Holocene calendar	10603
Iranian calendar	19 BP – 18 BP
Islamic calendar	20 BH – 19 BH
Japanese calendar	N/A
Javanese calendar	492–493
Julian calendar	603 DCIII
Korean calendar	2936
Minguo calendar	1309 before ROC 民前1309年
Nanakshahi calendar	−865
Seleucid era	914/915 AG
Thai solar calendar	1145–1146
Tibetan calendar	阳水狗年 (male Water-Dog) 729 or 348 or −424 — to — 阴水猪年 (female Water-Pig) 730 or 349 or −423

Year 603 (DCIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 603 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.

Events

Spring – Witteric, counting on the support of the nobles, attacks the royal palace in Toledo, and overthrows King Liuva II. He cuts off his right hand, and has him executed. Witteric becomes the new king of the Visigoths.^[1]
King Agilulf besieges Cremona, and with the assistance of the Slavs the city is destroyed. He captures Padua and Mantua (Northern Italy); its territory is divided between the Lombard duchies of Brescia and Bergamo.
Agilulf, under the influence of his wife Theodelinda, abandons Arianism for Catholicism, and is (with his son Adaloald) baptised in the Cathedral of Monza, where later the Iron Crown of Lombardy is installed.
The last mention of the Roman Senate on the Italian mainland is made (according to the Gregorian register). It mentions that the Senate has acclaimed new statues of Emperor Phocas and Empress Leontia.^[2]

Battle of Degsastan: King Æthelfrith of Northumbria defeats the combined forces of the Strathclyde Britons and Scots under Áedán mac Gabráin, establishing the supremacy of the Angles in the northern part of what will become known as the British Isles.

Emperor Wéndi stabilises the Chinese Empire; the agricultural acreage increases greatly, and shipbuilding technology reaches a new high level.
Prince Shōtoku of Japan establishes a twelve level cap and rank system, and is said to have authored a seventeen-article constitution.
Rebellious Göktürks depose and kill the ambitious ruler (khagan) Tardu, of the Western Turkic Khaganate (Central Asia).
Heshana Khan succeeds his father Tardu as ruler of the Göktürks, and levies heavy taxes on the Tiele people.

Births