This is a list of player transfers involving Top 14 teams before or during the 2019–20 season. The list is of deals that are confirmed and are either from or to a rugby union team in the Top 14 during the 2018–19 season. It is not unknown for confirmed deals to be cancelled at a later date. Bayonne and Brive are promoted to the Top 14, whilst Grenoble and Perpignan are demoted to the Pro D2 for the 2019–20 season.