|602 by topic|
|Ab urbe condita||1355|
|Balinese saka calendar||523–524|
|Chinese calendar||辛酉年 (Metal Rooster)|
3298 or 3238
— to —
壬戌年 (Water Dog)
3299 or 3239
|- Vikram Samvat||658–659|
|- Shaka Samvat||523–524|
|- Kali Yuga||3702–3703|
|Iranian calendar||20 BP – 19 BP|
|Islamic calendar||21 BH – 20 BH|
|Minguo calendar||1310 before ROC|
|Seleucid era||913/914 AG|
|Thai solar calendar||1144–1145|
728 or 347 or −425
— to —
729 or 348 or −424
Year 602 (DCII) was a common year starting on Monday (link will display the full calendar) of the Julian calendar. The denomination 602 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.
- Emperor Maurice succeeds in winning over the Avars to Byzantine rule, but his campaigns against the Avars, Lombards, Persians and Slavs drain the imperial treasury, requiring an increase in taxes. He orders the troops to stay for winter beyond the Danube, but a mutiny breaks out under Phocas. He brings the Byzantine forces back over the Danube and marches on to Constantinople.
- November 27 – A civil war breaks out and Phocas enters Constantinople. Maurice is captured trying to escape; he is forced to witness the slaughter of his five sons and all his supporters, and is then executed (beheaded) after a 20-year reign. His wife, Constantina, and his three daughters are spared, and sent to a monastery. Phocas is proclaimed the new emperor of the Byzantine Empire.
- Byzantine–Persian War: King Khosrau II launches an offensive against Constantinople, to avenge Maurice's death, his "friend and father", and tries to reconquer Byzantine territory. Narses, governor of Upper Mesopotamia, rebels against Phocas at the city of Edessa and requests aid from the Persians. Khosrau sends an expeditionary force to Armenia and crosses the Euphrates.
- Spring – Witteric is appointed commander-in-chief of the Visigoth army, and receives orders from King Liuva II to expel the Byzantines from Hispania.
- Third Chinese domination of Vietnam: The Early Lý dynasty ends; Hậu Lý Nam Đế, last ruler of Vąn Xuân (North Vietnam), abdicates the throne and becomes a vassal of the Sui dynasty.
- Augustine of Canterbury meets with the Welsh bishops at Aust near Chepstow. He accuses them of not adopting the Roman Christian way of dating Easter, and persuades them to accept the teaching of baptism (according to the Roman Rite).
- Adaloald, king of the Lombards (d. 626)
- Li Chunfeng, Chinese mathematician and historian (d. 670)
- Liu Rengui, general and official of the Tang dynasty (d. 685)
- Muawiyah I, founder of the Umayyad Caliphate (d. 680)
- Theodore of Tarsus, archbishop of Canterbury (d. 690)
- Xuanzang, Chinese Buddhist monk and traveler (d. 664)
- Zhiyan, Chinese (Buddhist) patriarch (d. 668)
- September 10 – Dugu Qieluo, empress of the Chinese Sui dynasty (b. 544)
- November 27 – Maurice, Byzantine emperor (b. 539)
- Nu'man III, king of the Lakhmids
- Ariulf, Lombard duke of Spoleto
- Bayan I, ruler (khagan) of the Avars
- Comentiolus, Byzantine general (magister militum)
- Dugu Qieluo, empress of the Sui dynasty (b. 544)
- Lady Xian, Chinese general (b. 512)
- Peter, Byzantine general (curopalates)
- Theodosius, Byzantine co-emperor
- Tiberius, Byzantine prince