4020 BBY

The following events took place in 4,020 BBY.

Deaths
{| align=center cellpadding=3 id=toc style="margin-left: 15px;"
 * align="center" colspan=1 | BBY/ABY: 4,023 BBY 4,022 BBY 4,021 BBY - 4,020 BBY - 4,019 BBY 4,018 BBY 4,017 BBY
 * align="center" colspan=1 | BBY/ABY: 4,023 BBY 4,022 BBY 4,021 BBY - 4,020 BBY - 4,019 BBY 4,018 BBY 4,017 BBY