Coutinho has not played for the club since attempting to force through a move to Barcelona, who saw three bids rejected for the Brazilian playmaker during the summer transfer window.
Klopp now faces the task of reintegrating the 25-year-old, who handed in a transfer request on the eve of Liverpool’s first game of the new Premier League season.
Alex-Oxlade Chamberlain, who joined Liverpool from Arsenal in a £35m deal last week, is also included but Danny Ings, Lazar Markovic and the injured Clyne are not named in the squad published on Uefa's official website.
Clyne, Liverpool's first-choice right-back last season, has not featured since suffering a back problem during pre-season.
The England international has been replaced in Klopp’s line-up by youngster Trent Alexander-Arnold, who has largely impressed since being trusted with a starting berth.
Alexander-Arnold was registered on Liverpool’s ‘B-list’ of players, which includes those aged under 21.
On Sunday, Klopp spoke about Coutinho for the first time since the close of the transfer window and suggested he has no qualms about reintegrating the playmaker into his squad.
“We still have a really good player in the squad who can play,” he told German media outlet SPORT1.
“Don't believe everything in the press or that there are offers here and there and that the minute after the offer has been entered, it should already be over.
“We are not like George Orwell where everybody knows everything immediately. We have exactly the situation we wanted and no other.”
Liverpool squad for the Champions League group stages: Simon Mignolet, Loris Karius, Danny Ward, Dejan Lovren, Ragnar Klavan, Alberto Moreno, Andy Robertson, Joel Matip, Jon Flanagan, Georginio Wijnaldum, James Milner, Philippe Coutinho, Jordan Henderson, Marko Grujic, Adam Lallana, Alex Oxlade-Chamberlain, Emre Can, Roberto Firmino, Mohamed Salah, Daniel Sturridge, Sadio Mane, Dominic Solanke.
B-List: Joe Gomez, Trent Alexander-Arnold, Conor Masterson, Cameron Brannagan, Ovie Ejaria, Rhian Brewster, Ben Woodburn, Harry Wilson.
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