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|Ab urbe condita||1359|
|Balinese saka calendar||527–528|
|Chinese calendar||乙丑年 (Wood Ox)|
3302 or 3242
— to —
丙寅年 (Fire Tiger)
3303 or 3243
|- Vikram Samvat||662–663|
|- Shaka Samvat||527–528|
|- Kali Yuga||3706���3707|
|Iranian calendar||16 BP – 15 BP|
|Islamic calendar||17 BH – 16 BH|
|Minguo calendar||1306 before ROC|
|Seleucid era||917/918 AG|
|Thai solar calendar||1148–1149|
732 or 351 or −421
— to —
733 or 352 or −420
Year 606 (DCVI) was a common year starting on Saturday (link will display the full calendar) of the Julian calendar. The denomination 606 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.
- Queen Brunhilda pressures her grandson Theuderic II to go to war against his brother Theudebert II of Austrasia. She puts Protadius, Mayor of the Palace, in charge of the Burgundian army. At the palace of Quierzy (Picardy), Theuderic assembles his army. The soldiers under Uncelen, Duke of Alemannia, refuse to fight against their countrymen and declare that the king orders Protadius' death. He is killed by the Frankish warriors and Theuderic is forced to sign a peace treaty.
- King Harsha of Thanesar establishes a northern Indian Empire, and unites the small monarchical states from Punjab to the Indus valley (modern Pakistan).
- Shashanka is the first recorded independent king of Bengal. He establishes his capital in modern-day Murshidabad (approximate date).
- February 22 – Sabinian dies at Rome after a two-year reign, and will not be replaced until 607.
- The diocese of Aquileia becomes a patriarchate (approximate date).
- Mennonite – Birth year of Menno Simons' earliest known relative. Immortalized as Song #606. Title – “Praise God From Whom All Blessings Flow” in The Mennonite Hymnal (the red one) also known as the Doxology (Dedication Anthem) by Thomas Ken, 1709. Tune possibly by Samuel Stanley, d. 1822. Key – A Major. Generally sung spontaneously by groups of Mennonites whenever two or three (preferably four) are gathered. Re-numbered 118 in the blue Hymnal, but definitely still referred to as 606 by Orthodox Mennonites.
- Hafsa bint Umar, daughter of Umar and wife of Muhammad
- Han Yuan, chancellor of the Tang Dynasty (d. 659)
- February 22 – Pope Sabinian
- Colmán of Cloyne, Irish monk and poet
- Cyriacus II, patriarch of Constantinople
- Jianzhi Sengcan, patriarch of Chán
- John Climacus, monk and writer
- Paterius, bishop of Brescia (Italy)
- Protadius, Mayor of the Palace (Burgundy)
- Pybba, king of Mercia (approximate date)
- Yang Su, general of the Sui Dynasty
- Yang Zhao, prince of the Sui Dynasty (b. 584)