Four more teams qualified based on placement in the 2016-17 World Rugby Sevens Series, and the remainder are to be decided in each of the six regions' respective tournaments.
[1] Ten teams competed in Rugby Africa's Sevens tournament on 6–7 October 2017 in Kampala, Uganda, and contested the two qualifying slots.
The 2017 Bolivarian Games rugby sevens tournament on 19–21 November served as the first part of the South American qualification process.
Silver-winning Paraguay advanced to the 2018 Sudamérica Rugby Sevens, where from 6–14 January they compete alongside Brazil, Chile, Colombia, Uruguay and some invitational teams.
[6] From 4 June to 16 July 2017, twelve teams competed at the Sevens Grand Prix in Moscow, Łódź, Clermont-Ferrand and Exeter, of which nine contested two World Cup spots with England, France and Wales already automatically qualified.