This is a list of the complete squads for the 2017–18 World Rugby Sevens Series.

[1][2][3][4][5][6][7][8][9][10] Captains for a tournament have their numbers marked in bold.

Coach: Santiago Gómez Cora Coach: Coach: Damian McGrath Coach: Simon Amor[note 1] Coach: Gareth Baber Coach: Jérôme Daret Coach: Innocent Simiyu Coach: Clark Laidlaw[note 1] Coach: Andrey Sorokin Coach: Gordon Tietjens Coach: John Dalziel Coach: Neil Powell[note 1] Coach: Pablo Feijoo Coach: Mike Friday Coach: Gareth Williams One place in each tournament of the series is allocated to a national team based on performance in the respective continental tournaments within Africa, Asia, Europe, Oceania, and the Americas.

Coach: Anthony Eddy Coach: Damian Karauna Coach: Douglas Guise Coach: Chang Ryul Choi Coach: Tolbert Onyango Coach: Luis Pedro Achard