Year 786 (DCCLXXXVI) was a common year starting on Sunday of the Julian calendar, the 786th year of the Common Era (CE) and Anno Domini (AD) designations, the 786th year of the 1st millennium, the 86th year of the 8th century, and the 7th year of the 780s decade. The denomination 786 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.