Linfield will play B36 Torshavn of the Faroe Islands in the first preliminary round of the Champions League.
If David Jeffrey's men progress they will then play Cypriot team AEL Limassol.
In the Europa League, Crusaders have been given a tough task against Norway's Rosenborg.
Cliftonville will play Kalmar of Sweden and Portadown go up against FK Shkendija of Macedonia.