|Centuries:||7th century – 8th century – 9th century|
|Decades:||770s 780s 790s – 800s – 810s 820s 830s|
|Years:||797 798 799 – 800 – 801 802 803|
Year 800 (DCCC) was a year. It was a leap year starting on Wednesday (link will display the full calendar) of the Julian calendar. During these years, the Anno Domini calendar era became the usual calendar in Europe for naming years. so from this time on, the years began to be known as 800 and onwards.