Ole Gunnar Solskjaer's Reds are in Pot Two and will face one team from each of the other pools, which will be selected in Geneva at the UEFA ceremony.
United are one of four English sides in the competition, with the ties due to begin later this month and scheduled to finish in early December, although provision can be made to extend this if matches are postponed, due to the Coronavirus pandemic.
Krasnodar, RB Salzburg and Midtjylland were the latest clubs to book their place in the group-stage and these are the confirmed entrants...
POT ONE
Bayern Munich (Germany)
Juventus (Italy)
Liverpool (England)
Paris Saint-Germain (France)
Porto (Portugal)
Real Madrid (Spain)
Sevilla (Spain)
Zenit St Petersburg (Russia)
POT TWO
Ajax (Netherlands)
Atletico Madrid (Spain)
Barcelona (Spain)
Borussia Dortmund (Germany)
Chelsea (England)
Manchester City (England)
UNITED (ENGLAND)
Shakhtar Donetsk (Ukraine)
POT THREE
Atalanta (Italy)
Dynamo Kiev (Ukraine)
Internazionale (Italy)
Krasnodar (Russia)
Lazio (Italy)
Olympiacos (Greece)
RB Leipzig (Germany)
RB Salzburg (Austria)
POT FOUR
Borussia Monchengladbach (Germany)
Club Brugge (Belgium)
Ferencvaros (Hungary)
Istanbul Basaksehir (Turkey)
Lokomotiv Moscow (Russia)
Marseille (France)
Midtjylland (Denmark)
Rennes (France)
No team can play a club from the same country and United are paired with Liverpool which means, where possible, we will be playing on separate days to the Merseysiders.