Year 108 (CVIII) was a leap year starting on Saturday (link will display the full calendar) of the Julian calendar. At the time, it was known as the Year of the Consulship of Trebonius and Bradua (or, less frequently, year 861 Ab urbe condita). The denomination 108 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.

One hundred million (100,000,000) is the natural number following 99999999 and preceding 100000001.