|Centuries:||7th century – 8th century – 9th century|
|Decades:||670s 680s 690s – 700s – 710s 720s 730s|
|Years:||706 707 708 – 709 – 710 711 712|
|709 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1462|
|Bahá'í calendar||−1135 – −1134|
|English Regnal year||N/A|
|Chinese calendar||戊申年 (Earth Monkey)
3405 or 3345
— to —
己酉年 (Earth Rooster)
3406 or 3346
|- Vikram Samvat||765–766|
|- Shaka Samvat||631–632|
|- Kali Yuga||3810–3811|
|Igbo calendar||−291 – −290|
|Japanese calendar||Wadō 2
|Minguo calendar||1203 before ROC
|Thai solar calendar||1252|
|Wikimedia Commons has media related to 709.|
Year 709 (DCCIX) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. The denomination 709 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.
- Saelred becomes king of Essex.
- Ceolred becomes king of Mercia, after his cousin Cenred abdicates to become a monk in Rome.
- Byzantine Empire: An Umayyad army under Maslamah ibn Abd al-Malik raids Isauria.
- After two years of failed efforts, the Arab general Qutayba ibn Muslim captures Bukhara for the Umayyad Caliphate. The Hephthalite princes of Tokharistan rebel against the Arabs later in the year, but are swiftly subdued by Qutayba.
- Byzantine emperor Justinian II sends a fleet to Italy under the patrikios Theodore, to intervene in the dispute between Pope Constantine and the archbishop Felix of Ravenna, who claimed to be independent of the pope's authority. Theodore arrests Felix and other Italian leaders and deports them to Constantinople, from where they were exiled to Cherson.
- Emperor Kōnin of Japan (d. 782)
- Yan Zhenqing, renowned Chinese calligrapher and governor (d. 785)
- Mazu Daoyi, Chinese Zen Buddhist monk (d. 788)
- Yaxun B'alam IV, king of Yaxchilan (d. 768)
- January 9 – Saint Adrian of Canterbury
- April 24 – Wilfrid, English archbishop and saint
- May 25 – Aldhelm, Bishop of Sherborne
- Treadgold, Warren T. (1997), A History of the Byzantine State and Society, Stanford, CA: Stanford University Press, p. 341, ISBN 0-8047-2630-2
- Venning, Timothy, ed. (2006). A Chronology of the Byzantine Empire. Palgrave Macmillan. pp. 191–192. ISBN 1-4039-1774-4.
- Treadgold, Warren T. (1997), A History of the Byzantine State and Society, Stanford, CA: Stanford University Press, p. 938, ISBN 0-8047-2630-2