| Manager: Diego Simeone (Argentina) | | | | | |
| No. | Pos | Full Name | Birth Date (Age) | Club | Country | |
| 1 | GK | Juan Musso | May 6, 1994 (aged 31) | Atlético Madrid |  | Argentina |
| 2 | DF | José María Giménez | January 20, 1995 (aged 30) | Atlético Madrid | | Uruguay |
| 3 | DF | César Azpilicueta | August 28, 1989 (aged 35) | Atlético Madrid | | Spain |
| 4 | MF | Conor Gallagher | February 6, 2000 (aged 25) | Atlético Madrid | | England |
| 5 | MF | Rodrigo De Paul | May 24, 1994 (aged 31) | Atlético Madrid | | Argentina |
| 6 | MF | Koke | January 8, 1992 (aged 33) | Atlético Madrid | | Spain |
| 7 | FW | Antoine Griezmann | March 21, 1991 (aged 34) | Atlético Madrid | | France |
| 8 | MF | Pablo Barrios | June 15, 2003 (aged 21) | Atlético Madrid | | Spain |
| 9 | FW | Alexander Sørloth | December 5, 1995 (aged 29) | Atlético Madrid | | Norway |
| 10 | FW | Ángel Correa | March 9, 1995 (aged 30) | Atlético Madrid | | Argentina |
| 11 | MF | Thomas Lemar | November 12, 1995 (aged 29) | Atlético Madrid | | France |
| 12 | MF | Samuel Lino | December 23, 1999 (aged 25) | Atlético Madrid | | Brazil |
| 13 | GK | Jan Oblak | January 7, 1993 (aged 32) | Atlético Madrid | | Slovenia |
| 14 | MF | Marcos Llorente | January 30, 1995 (aged 30) | Atlético Madrid | | Spain |
| 15 | DF | Clément Lenglet | June 17, 1995 (aged 29) | Atlético Madrid | | France |
| 16 | DF | Nahuel Molina | April 6, 1998 (aged 27) | Atlético Madrid | | Argentina |
| 17 | MF | Rodrigo Riquelme | April 2, 2000 (aged 25) | Atlético Madrid | | Spain |
| 18 | FW | Carlos Martín | April 22, 2002 (aged 23) | Atlético Madrid | | Spain |
| 19 | FW | Julián Alvarez | January 31, 2000 (aged 25) | Atlético Madrid | | Argentina |
| 20 | DF | Axel Witsel | January 12, 1989 (aged 36) | Atlético Madrid | | Belgium |
| 21 | DF | Javi Galán | November 19, 1994 (aged 30) | Atlético Madrid | | Spain |
| 22 | FW | Giuliano Simeone | December 18, 2002 (aged 22) | Atlético Madrid | | Argentina |
| 23 | DF | Reinildo Mandava | January 21, 1994 (aged 31) | Atlético Madrid | | Mozambique |
| 24 | DF | Robin Le Normand | November 11, 1996 (aged 28) | Atlético Madrid | | Spain |
| 27 | DF | Ilias Kostis | February 27, 2003 (aged 22) | Atlético Madrid | | Greece |
| 29 | MF | Javi Serrano | January 16, 2003 (aged 22) | Atlético Madrid | | Spain |
| 31 | GK | Antonio Gomis | May 20, 2003 (aged 22) | Atlético Madrid | | Spain |
| 34 | GK | Salvi Esquivel | September 30, 2005 (aged 19) | Atlético Madrid | | Spain |
| 38 | MF | Taufik Seidu | January 20, 2008 (aged 17) | Atlético Madrid | | Spain |
| 40 | MF | Rayane Belaid | February 11, 2005 (aged 20) | Atlético Madrid | | Spain |
| Botafogo (Group B) | | | | | |
| Manager: Renato Paiva (Portugal) | | | | | |
| No. | Pos | Full Name | Birth Date (Age) | Club | Country | |
| 1 | GK | Raul | July 28, 1997 (aged 27) | Botafogo | | Brazil |
| 2 | DF | Vitinho | July 23, 1999 (aged 25) | Botafogo | | Brazil |
| 4 | DF | Mateo Ponte | May 24, 2003 (aged 22) | Botafogo | | Uruguay |
| 5 | MF | Danilo Barbosa | February 28, 1996 (aged 29) | Botafogo | | Brazil |
| 7 | FW | Artur | February 15, 1998 (aged 27) | Botafogo | | Brazil |
| 8 | FW | Álvaro Montoro | April 17, 2007 (aged 18) | Botafogo | | Argentina |
| 9 | FW | Rwan Cruz | May 20, 2001 (aged 24) | Botafogo | | Brazil |
| 10 | FW | Jefferson Savarino | November 11, 1996 (aged 28) | Botafogo | | Venezuela |
| 11 | FW | Matheus Martins | July 16, 2003 (aged 21) | Botafogo | | Brazil |
| 12 | GK | John | February 13, 1996 (aged 29) | Botafogo | | Brazil |
| 13 | DF | Alex Telles | December 15, 1992 (aged 32) | Botafogo | | Brazil |
| 15 | DF | Bastos | March 27, 1991 (aged 34) | Botafogo | | Angola |
| 16 | FW | Nathan Fernandes | February 16, 2005 (aged 20) | Botafogo | | Brazil |
| 17 | MF | Marlon Freitas (captain) | March 27, 1995 (aged 30) | Botafogo | | Brazil |
| 19 | FW | Kayke | June 19, 2006 (aged 18) | Botafogo | | Brazil |
| 20 | DF | Alexander Barboza | March 16, 1995 (aged 30) | Botafogo | | Argentina |
| 21 | DF | Marçal | February 19, 1989 (aged 36) | Botafogo | | Brazil |
| 23 | FW | Santiago Rodríguez | January 8, 2000 (aged 25) | Botafogo | | Brazil |
| 24 | GK | Léo Linck | March 3, 2001 (aged 24) | Botafogo | | Brazil |
| 25 | MF | Allan | January 8, 1991 (aged 34) | Botafogo | | Brazil |
| 26 | MF | Gregore | March 2, 1994 (aged 31) | Botafogo | | Brazil |
| 28 | MF | Newton | March 12, 2000 (aged 25) | Botafogo | | Brazil |
| 31 | DF | Kaio Pantaleão | September 18, 1995 (aged 29) | Botafogo | | Brazil |
| 32 | DF | Jair Cunha | March 7, 2005 (aged 20) | Botafogo | | Brazil |
| 39 | FW | Gonzalo Mastriani | April 28, 1993 (aged 32) | Botafogo | | Uruguay |
| 40 | GK | Cristhian Loor | March 9, 2006 (aged 19) | Botafogo | | Ecuador |
| 57 | DF | David Ricardo | December 21, 2002 (aged 22) | Botafogo | | Brazil |
| 66 | DF | Cuiabano | February 16, 2003 (aged 22) | Botafogo | | Brazil |
| 99 | FW | Igor Jesus | February 25, 2001 (aged 24) | Botafogo | | Brazil |
| Paris Saint-Germain (Group B) | | | | | |
| Manager: Luis Enrique (Spain) | | | | | |
| No. | Pos | Full Name | Birth Date (Age) | Club | Country | |
| 1 | GK | Gianluigi Donnarumma | February 25, 1999 (aged 26) | Paris Saint-Germain | | Italy |
| 2 | DF | Achraf Hakimi | November 4, 1998 (aged 26) | Paris Saint-Germain | | Morocco |
| 3 | DF | Presnel Kimpembe | August 13, 1995 (aged 29) | Paris Saint-Germain | | France |
| 4 | DF | Lucas Beraldo | November 24, 2003 (aged 21) | Paris Saint-Germain | | Brazil |
| 5 | DF | Marquinhos | May 14, 1994 (aged 31) | Paris Saint-Germain | | Brazil |
| 7 | FW | Khvicha Kvaratskhelia | February 12, 2001 (aged 24) | Paris Saint-Germain | | Georgia |
| 8 | MF | Fabián Ruiz | April 3, 1996 (aged 29) | Paris Saint-Germain | | Spain |
| 9 | FW | Gonçalo Ramos | June 20, 2001 (aged 23) | Paris Saint-Germain | | Portugal |
| 10 | FW | Ousmane Dembélé | May 15, 1997 (aged 28) | Paris Saint-Germain | | France |
| 14 | FW | Désiré Doué | June 3, 2005 (aged 20) | Paris Saint-Germain | | France |
| 17 | MF | Vitinha | February 13, 2000 (aged 25) | Paris Saint-Germain | | Portugal |
| 19 | MF | Lee Kang-in | February 19, 2001 (aged 24) | Paris Saint-Germain | | South Korea |
| 20 | MF | Gabriel Moscardo | September 28, 2005 (aged 19) | Paris Saint-Germain | | Brazil |
| 21 | DF | Lucas Hernandez | February 14, 1996 (aged 29) | Paris Saint-Germain | | France |
| 24 | MF | Senny Mayulu | May 17, 2006 (aged 19) | Paris Saint-Germain | | France |
| 25 | DF | Nuno Mendes | June 19, 2002 (aged 22) | Paris Saint-Germain | | Portugal |
| 29 | FW | Bradley Barcola | September 2, 2002 (aged 22) | Paris Saint-Germain | | France |
| 33 | MF | Warren Zaïre-Emery | March 8, 2006 (aged 19) | Paris Saint-Germain | | France |
| 39 | GK | Matvey Safonov | February 25, 1999 (aged 26) | Paris Saint-Germain | | Russia |
| 43 | DF | Noham Kamara | January 22, 2007 (aged 18) | Paris Saint-Germain | | France |
| 49 | FW | Ibrahim Mbaye | January 24, 2008 (aged 17) | Paris Saint-Germain | | France |
| 51 | DF | Willian Pacho | October 6, 2001 (aged 23) | Paris Saint-Germain | | Ecuador |
| 80 | GK | Arnau Tenas | May 30, 2001 (aged 24) | Paris Saint-Germain | | Spain |
| 87 | MF | João Neves | September 27, 2004 (aged 20) | Paris Saint-Germain | | Portugal |
| Seattle Sounders FC (Group B) | | | | | |
| Brian Schmetzer (United States) | | | | | |
| No. | Pos | Full Name | Birth Date (Age) | Club | Country | |
| 3 | DF | Travian Sousa | September 19, 2001 (aged 23) | Seattle Sounders FC | | United States |
| 5 | DF | Nouhou Tolo | June 23, 1997 (aged 27) | Seattle Sounders FC | | Cameroon |
| 6 | MF | João Paulo | March 8, 1991 (aged 34) | Seattle Sounders FC | | Brazil |
| 7 | MF | Cristian Roldan | June 3, 1995 (aged 30) | Seattle Sounders FC | | United States |
| 9 | FW | Jesús Ferreira | December 24, 2000 (aged 24) | Seattle Sounders FC | | United States |
| 10 | FW | Pedro de la Vega | February 7, 2001 (aged 24) | Seattle Sounders FC | | Argentina |
| 11 | MF | Albert Rusnak | July 7, 1994 (aged 30) | Seattle Sounders FC | | Slovakia |
| 13 | FW | Jordan Morris | October 26, 1994 (aged 30) | Seattle Sounders FC | | United States |
| 14 | FW | Paul Rothrock | January 9, 1999 (aged 26) | Seattle Sounders FC | | United States |
| 15 | DF | Jon Bell | August 26, 1997 (aged 27) | Seattle Sounders FC | | Jamaica |
| 16 | DF | Alex Roldán | July 28, 1996 (aged 28) | Seattle Sounders FC | | El Salvador |
| 18 | MF | Obed Vargas | August 5, 2005 (aged 19) | Seattle Sounders FC | | Mexico |
| 19 | FW | Danny Musovski | November 30, 1995 (aged 29) | Seattle Sounders FC | | United States |
| 20 | DF | Kim Kee-hee | July 13, 1989 (aged 35) | Seattle Sounders FC | | South Korea |
| 21 | MF | Reed Baker-Whiting | March 31, 2005 (aged 20) | Seattle Sounders FC | | United States |
| 24 | GK | Stefan Frei | April 20, 1986 (aged 39) | Seattle Sounders FC | | United States |
| 25 | DF | Jackson Ragen | September 24, 1998 (aged 26) | Seattle Sounders FC | | United States |
| 26 | GK | Andrew Thomas | September 1, 1998 (aged 26) | Seattle Sounders FC | | United States |
| 28 | DF | Yeimar Gómez | June 30, 1992 (aged 32) | Seattle Sounders FC | | Colombia |
| 29 | GK | Jacob Castro | December 18, 1999 (aged 25) | Seattle Sounders FC | | United States |
| 33 | DF | Cody Baker | January 7, 2004 (aged 21) | Seattle Sounders FC | | United States |
| 75 | MF | Danny Leyva | May 5, 2003 (aged 22) | Seattle Sounders FC | | United States |
| 77 | FW | Ryan Kent | November 11, 1996 (aged 28) | Seattle Sounders FC | | England |
| 85 | DF | Kalani Kossa-Rienzi | June 27, 2002 (aged 22) | Seattle Sounders FC | | United States |
| 93 | FW | Georgi Minoungou | July 25, 2002 (aged 22) | Seattle Sounders FC | | Ivory Coast |
| 95 | FW | Osaze De Rosario | July 19, 2001 (aged 23) | Seattle Sounders FC | | Guyana |
