*Dinamo Minsk Youth 2-1 Ludogorets Youth
| 08.10.2023 | Ludogorets Youth | 0-2 | Dinamo Minsk Youth | |
| 04.10.2023 | Dinamo Minsk Youth | 0-1 | Ludogorets Youth | |
*Dinamo Zagreb Youth 5-2 Istanbul BFK Youth
| 25.10.2023 | Istanbul BFK Youth | 1-3 | Dinamo Zagreb Youth | |
| 04.10.2023 | Dinamo Zagreb Youth | 2-1 | Istanbul BFK Youth | |
Famalicão Youth 2-2 Midtjylland Youth *
| 25.10.2023 | Midtjylland Youth | 0-0/p.7-6 | Famalicão Youth | |
| 04.10.2023 | Famalicão Youth | 2-2 | Midtjylland Youth | |
Universitatea Craiova Yth 0-5 FK Partizan Youth *
| 25.10.2023 | FK Partizan Youth | 4-0 | Universitatea Craiova Yth | |
| 04.10.2023 | Universitatea Craiova Yth | 0-1 | FK Partizan Youth | |
*Gabala FC Youth 2-1 Puskás Akadémia U19
| 25.10.2023 | Puskás Akadémia U19 | 0-1 | Gabala FC Youth | |
| 04.10.2023 | Gabala FC Youth | 1-1 | Puskás Akadémia U19 | |
Malmö FF Youth 3-5 HJK Helsinki Youth *
| 25.10.2023 | HJK Helsinki Youth | 1-2 | Malmö FF Youth | |
| 04.10.2023 | Malmö FF Youth | 1-4 | HJK Helsinki Youth | |
KAA Gent Youth 0-3 FC Basel Youth *
| 25.10.2023 | FC Basel Youth | 2-0 | KAA Gent Youth | |
| 04.10.2023 | KAA Gent Youth | 0-1 | FC Basel Youth | |
*AZ Alkmaar Youth 14-0 Klaipėdos FM Yth
| 25.10.2023 | Klaipėdos FM Yth | 0-2 | AZ Alkmaar Youth | |
| 03.10.2023 | AZ Alkmaar Youth | 12-0 | Klaipėdos FM Yth | |
Lech P. Youth 1-1 FC Nantes Youth *
| 25.10.2023 | FC Nantes Youth | 0-0/p.4-2 | Lech P. Youth | |
| 04.10.2023 | Lech P. Youth | 1-1 | FC Nantes Youth | |
*Sparta Praha Youth 1-1 Maccabi Haifa Youth
| 25.10.2023 | Maccabi Haifa Youth | CANC | Sparta Praha Youth | |
| 04.10.2023 | Sparta Praha Youth | 1-1 | Maccabi Haifa Youth | |
Maribor Youth 1-3 Mainz U19 *
| 25.10.2023 | Mainz U19 | 1-1 | Maribor Youth | |
| 04.10.2023 | Maribor Youth | 0-2 | Mainz U19 | |
*Molde Youth 5-4 Hamilton Youth
| 24.10.2023 | Hamilton Youth | 4-2 | Molde Youth | |
| 03.10.2023 | Molde Youth | 3-0 | Hamilton Youth | |
Pafos FC Youth 0-6 MSK Zilina Youth *
| 25.10.2023 | MSK Zilina Youth | 5-0 | Pafos FC Youth | |
| 04.10.2023 | Pafos FC Youth | 0-1 | MSK Zilina Youth | |
*Olympiakos Pireus Yth 6-2 Lecce Youth
| 25.10.2023 | Lecce Youth | 1-3 | Olympiakos Pireus Yth | |
| 04.10.2023 | Olympiakos Pireus Yth | 3-1 | Lecce Youth | |
*Rukh Lviv Youth 4-2 FK Sarajevo Yth
| 25.10.2023 | FK Sarajevo Yth | 1-3 | Rukh Lviv Youth | |
| 04.10.2023 | Rukh Lviv Youth | 1-1 | FK Sarajevo Yth | |
FC Turan (KAZ) Youth 0-6 Sheriff Tiraspol Youth *
| 25.10.2023 | Sheriff Tiraspol Youth | 5-0 | FC Turan (KAZ) Youth | |
| 04.10.2023 | FC Turan (KAZ) Youth | 0-1 | Sheriff Tiraspol Youth | |