wales qualified a team of 12 men by being among the top nine ranked nations from the commonwealth in the 2016–17 world rugby sevens series ranking. in addition, they qualified a team of 12 women by being the top ranked commonwealth nation in the 2017 rugby europe women's sevens grand prix among those not already qualified though the 2016–17 world rugby women's sevens series ranking.. during the tournament, harri millard replaced the injured morgan williams.