This is a list of player transfers involving RFU Championship teams before or during the 2020–21 season.
The list is of deals that are confirmed and are either from or to a rugby union team in the Championship during the 2019–20 season.
It is not unknown for confirmed deals to be cancelled at a later date.
On 2 April 2020, Newcastle Falcons are automatically promoted back to Premiership Rugby to replace relegated Saracens under RFU's 'best record playing formula' and due to the COVID-19 pandemic.
[1] Leeds Tykes are relegated to National League 1 and are replaced by promoted Richmond for the 2020–21 season.