|Centuries:||7th century – 8th century – 9th century|
|Decades:||720s 730s 740s – 750s – 760s 770s 780s|
|Years:||752 753 754 – 755 – 756 757 758|
|755 by topic|
|State leaders – Sovereign states|
|Birth and death categories|
|Births – Deaths|
|Establishment and disestablishment categories|
|Establishments – Disestablishments|
|Ab urbe condita||1508|
|Chinese calendar||甲午年 (Wood Horse)
3451 or 3391
— to —
乙未年 (Wood Goat)
3452 or 3392
|- Vikram Samvat||811–812|
|- Shaka Samvat||677–678|
|- Kali Yuga||3856–3857|
|Japanese calendar||Tenpyō-shōhō 7
|Minguo calendar||1157 before ROC
|Seleucid era||1066/1067 AG|
|Thai solar calendar||1297–1298|
|Wikimedia Commons has media related to 755.|
Year 755 (DCCLV) was a common year starting on Wednesday (link will display the full calendar) of the Julian calendar. The denomination 755 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.
- September – Abd al-Rahman I, a member of the Umayyad Dynasty, lands with a Muslim invasion force at Almuñécar in Al-Andalus (modern Spain), where the next year he will establish the Caliphate of Córdoba ("Golden Caliphate").
- Teodato Ipato is deposed and blinded after a 13-year reign. He is succeeded by Galla Gaulo who usurps the ducal throne of Venice.
- The Anglo-Saxon Chronicle's description under this date (now dated 757) of king Sigeberht of Wessex being deposed by Cynewulf is notably fuller than earlier entries.
- December 16 – General An Lushan begins the Anshi Rebellion against emperor Xuan Zong of the Tang Dynasty (China). His army surges down from Fanyang (near modern Beijing) and moves rapidly along the Grand Canal. Meanwhile, Xuan Zong sends Feng Changqing, governor of Fanyang, to build up defenses at the eastern capital of Luoyang.
- Trisong Detsen becomes emperor of Tibet. During his reign he plays a pivotal role in the introduction of Buddhism and the establishment of the Nyingma or "Ancient" school of Tibetan Buddhism.
- Empress Kōken introduces the Tanabata festival to Japan.
- Alliances and trade between Mayan city-states have begun to break down. Malnutrition is on the rise. A diminishing of food supply creating social upheaval and war (approximate date).
- Wala of Corbie, Frankish noble (approximate date)
- William of Gellone, Frankish noble (approximate date)
- Abd al-Rahman ibn Habib al-Fihri, Arab noble
- Abu Muslim Khorasani, Muslim general
- Elisedd ap Gwylog, king of Powys (Wales)
- Sunpadh, Persian rebel leader
- Zhang Xuan, Chinese painter (b. 713)