Year 734 (DCCXXXIV) was a common year starting on Friday of the Julian calendar, the 734th year of the Common Era (CE) and Anno Domini (AD) designations, the 734th year of the 1st millennium, the 34th year of the 8th century, and the 5th year of the 730s decade. The denomination 734 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.