778

Year 778 (DCCLXXVIII) was a common year starting on Thursday of the Julian calendar, the 778th year of the Common Era (CE) and Anno Domini (AD) designations, the 778th year of the 1st millennium, the 78th year of the 8th century, and the 9th year of the 770s decade. The denomination 778 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.