|Centuries:||9th century – 10th century – 11th century|
|Decades:||970s 980s 990s – 1000s – 1010s 1020s 1030s|
|Years:||997 998 999 – 1000 – 1001 1002 1003|
|Centuries:||9th century · 10th century · 11th century|
|Decades:||970s 980s 990s 1000s 1010s 1020s 1030s|
|Years:||997 998 999 1000 1001 1002 1003|
|Ab urbe condita||1753|
|English Regnal year||N/A|
— to —庚子年十二月初三日
|- Vikram Samvat||1056–1057|
|- Shaka Samvat||922–923|
|- Kali Yuga||4101–4102|
|Minguo calendar||912 before ROC
|Thai solar calendar||1543|
1000 (M) of the Gregorian Calendar was the last year of the 10th century as well as the last year of the first millennium of the Christian era ending on December 31. According to the then used Julian Calendar, 1000 AD was a leap year starting on Monday. In the Gregorian Calendar (not invented at the time) the year would have been a common year starting on Wednesday.
- Leif Ericson becomes the first European to visit America
- Gunpowder is invented in China.
- Dhaka, Bangladesh, is started.