At least four teams will make their debut in the Champions League this season.
They are: Como, LASK, Viking and Sabah.
The quartet was confirmed among the 36 teams in the league phase, following the conclusion of the qualifying rounds.
Como finished in the top four spots in Serie A and will represent Italy alongside Inter, Napoli and Roma.
LASK pulled off a dramatic 5-1 win over Celtic in the play-offs to win 5-4 on aggregate.
Sabah defeated Hapoel Beer-Sheva 5-2 in extra time to complete a 6-4 aggregate victory.
Viking will also join fellow Norwegian club Bodø/Glimt in the competition.