The year 3 (III) was a common year which started on a Monday. according to the Julian calendar. According to the Gregorian calendar, it started on a Wednesday. At the time, it was known as the "Year of the Consulship of Lamia and Servilius". The year is called 3 since the early medieval period, when the Anno Domini calendar era became the usual method in Europe for naming years. It was the 3rd year of the 1st century.