Aberdeen, Rangers and St Johnstone will feature in Monday’s draws for the first and second qualifying rounds of the Europa League, from 12:00 BST.
Rangers and St Johnstone – third and fourth in last season’s Premiership – will be in the first qualifying round.
Aberdeen, who were the Scottish top-flight runners-up and beaten Scottish Cup finalists, enter at the second qualifying round stage.
All three Scottish sides are seeded in their initial draws.
The winner of Saints’ tie will also be seeded but the winner of Rangers’ tie will be unseeded in the second qualifying round.
The first qualifying round will take place on 29 June and 6 July.
Crusaders are seeded in the draw for that round but their Irish Premiership rivals Coleraine and Ballymena United are not.
League of Ireland teams Cork City, Derry City and Shamrock Rovers and Welsh sides Bala Town, Bangor City and Connah’s Quay Nomads are all unseeded.
Uefa say the 100 teams will be “further split into seeding groups prior to the draw” and this will also be the case for the second qualifying round, which will be played over 13 and 20 July.
By being a seeded team, Aberdeen cannot be drawn with Brondby, Galatasaray or Hajduk Split.
The third qualifying round (27 July and 3 August) and play-off round (17 and 24 August) complete the journey successful qualifying teams will make to reach the group stage, which will take place over six matchdays between mid-September and early December.
Sixteen sides, including Arsenal, Lazio and Real Sociedad, are already guaranteed places in the 48-team group stage, which will comprise 12 four-team sections.
The Dons and Saints featured in the Europa League qualifying rounds last season while Rangers are returning to European competition after a six-year absence.
And Rangers forward Kenny Miller, 37, told his club website: “As players, we are looking forward to playing again at that level of football.
“For me, it’s another opportunity I thought I might never have had again. And for the fans, I’m sure they’ve been craving these European nights, particularly back at Ibrox.”