4th century BC

Millennium:	1st millennium BC
Centuries:	5th century BC; 4th century BC; 3rd century BC;
Timelines:	5th century BC; 4th century BC; 3rd century BC;
State leaders:	5th century BC; 4th century BC; 3rd century BC;
Decades:	390s BC; 380s BC; 370s BC; 360s BC; 350s BC; 340s BC; 330s BC; 320s BC; 310s BC; 300s BC;
Categories:	Births – Deaths ; Establishments – Disestablishments

The 4th century BC started the first day of 400 BC and ended the last day of 301 BC.