This is a list of player transfers involving Top 14 teams before or during the 2017–18 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 2016–17 season.
On 20 May 2017, Oyonnax and Agen are promoted in to the Top 14 for the 2017–18 season, with Bayonne and Grenoble demoted to the Pro D2[1] It is not unknown for confirmed deals to be cancelled at a later date.