21st century BC

Millennium:	3rd millennium BC
Centuries:	22nd century BC; 21st century BC; 20th century BC;
Timelines:	22nd century BC; 21st century BC; 20th century BC;
State leaders:	22nd century BC; 21st century BC; 20th century BC;
Decades:	2090s BC; 2080s BC; 2070s BC; 2060s BC; 2050s BC; 2040s BC; 2030s BC; 2020s BC; 2010s BC; 2000s BC;
Categories:	Births – Deaths ; Establishments – Disestablishments

The 21st century BC is a century which lasted from the year 2100 BC to 2001 BC.