2020–21 EFL League One

The 2020–21 EFL League One (referred to as the Sky Bet League One for sponsorship reasons) was the 17th season of Football League One under its current title and the 29th season under its current league division format.

Team changes
The following teams have changed division since the 2019–20 season.

To League One
Promoted from League Two
 * Swindon Town
 * Crewe Alexandra
 * Plymouth Argyle
 * Northampton Town

Relegated from Championship
 * Charlton Athletic
 * Wigan Athletic
 * Hull City

From League One
Promoted to Championship
 * Coventry City
 * Rotherham United
 * Wycombe Wanderers

Relegated to League Two
 * Bolton Wanderers
 * Southend United
 * Tranmere Rovers

Expelled from the EFL
 * Bury

Play-offs
First leg

Second leg

Final

Annual
 EFL League One Team of the season