Category:21st century

The 21st (twenty-first) century is the current century in the Anno Domini era or Common Era, under the Gregorian calendar. It began on January 1, 2001 (MMI) and will end on December 31, 2100 (MMC). The 21st century is the first century of the 3rd millennium.

Articles in this category cover multiple events in the 21st century, crossing multiple scenarios.