
They face RB Leipzig, Copenhagen and AC Milan respectively.
In the Champions League tonight, Celtic's players will wear black armbands in memory of those who lost their lives in the Creeslough tragedy.
Celtic face RB Leipzig in Group F at Parkhead from 8.
Real Madrid and Shakhtar Donetsk meet in the other Group game.
At 5.45, Manchester City play Copenhagen in Group G at Denmark
In the other match in that Group, Borussia Dortmund are up against Sevilla.
Chelsea take on AC Milan in Group E at the San Siro from 8pm.
Dinamo Zagreb play Red Bull Salzburg in the other tie in that Group.
In Group H, it's Maccabi Haifa against Juventus and Paris Saint Germain to face Benfica.