|Millennia:||2nd millennium · 3rd millennium · 4th millennium|
|Centuries:||21st century · 22nd century · 23rd century · 24th century · 25th century · 26th century · 27th century · 28th century · 29th century · 30th century|
The 3rd millennium is a period of time that started on January 1, 2001 and will end on December 31, 3000 of the Gregorian calendar. As this millennium is currently in progress, it's first two decades, the past 2000s and the present 2010s are the subject of the historian's attention. The remaining part of the 21st century and the time after that are researched in Futures studies.