| 07 Apr 21 | Qualifier   | Al-GharafaAl-Gharafa | 0 - 0 | OlmaliqOlmaliq |
| 07 Apr 21 | Qualifier | Al WahdaAl Wahda | 2 - 1 | Al-ZawraaAl-Zawraa |
| 10 Apr 21 | Qualifier | Foolad FCFoolad FC | 4 - 0 | Al AinAl Ain |
| |
| 14 Apr 21 | r01   | PersepolisPersepolis | 1 - 0 | Al WahdaAl Wahda |
| 14 Apr 21 | r01  | PakhtakorPakhtakor | 3 - 3 | Tractor SaziTractor Sazi |
| 14 Apr 21 | r01 | GoaGoa | 0 - 0 | Al-Rayyan SCAl-Rayyan SC |
| 14 Apr 21 | r01 | Al-WehdatAl-Wehdat | 0 - 0 | Al Nassr FCAl Nassr FC |
| 14 Apr 21 | r01 | Al SharjahAl Sharjah | 1 - 0 | Al-Quwa Al-JawiyaAl-Quwa Al-Ja |
| 14 Apr 21 | r01 | Al-SaddAl-Sadd | 1 - 1 | Foolad FCFoolad FC |
| 15 Apr 21 | r01 | Al-Duhail SCAl-Duhail SC | 2 - 0 | Al-Shorta SCAl-Shorta SC |
| 15 Apr 21 | r01 | IstiklolIstiklol | 0 - 0 | Shabab Al-Ahli DubaiShabab Al-Ahl |
| 15 Apr 21 | r01 | Al HilalAl Hilal | 2 - 2 | OlmaliqOlmaliq |
| 15 Apr 21 | r01 | EsteghlalEsteghlal | 5 - 2 | Al-Ahli Saudi FCAl-Ahli Saudi |
| |
| 17 Apr 21 | r02 | Al WahdaAl Wahda | 0 - 0 | GoaGoa |
| 17 Apr 21 | r02 | Al-Quwa Al-JawiyaAl-Quwa Al-Ja | 0 - 0 | PakhtakorPakhtakor |
| 17 Apr 21 | r02 | Al-Rayyan SCAl-Rayyan SC | 1 - 3 | PersepolisPersepolis |
| 17 Apr 21 | r02 | Tractor SaziTractor Sazi | 0 - 0 | Al SharjahAl Sharjah |
| 17 Apr 21 | r02 | Al Nassr FCAl Nassr FC | 2 - 1 | Al-SaddAl-Sadd |
| 17 Apr 21 | r02 | Foolad FCFoolad FC | 1 - 0 | Al-WehdatAl-Wehdat |
| 18 Apr 21 | r02 | Al-Ahli Saudi FCAl-Ahli Saudi | 1 - 1 | Al-Duhail SCAl-Duhail SC |
| 18 Apr 21 | r02 | Shabab Al-Ahli DubaiShabab Al-Ahl | 0 - 2 | Al HilalAl Hilal |
| 18 Apr 21 | r02 | OlmaliqOlmaliq | 2 - 3 | IstiklolIstiklol |
| 18 Apr 21 | r02 | Al-Shorta SCAl-Shorta SC | 0 - 3 | EsteghlalEsteghlal |
| |
| 20 Apr 21 | r03 | Al WahdaAl Wahda | 3 - 2 | Al-Rayyan SCAl-Rayyan SC |
| 20 Apr 21 | r03 | Al-Quwa Al-JawiyaAl-Quwa Al-Ja | 0 - 0 | Tractor SaziTractor Sazi |
| 20 Apr 21 | r03 | PersepolisPersepolis | 2 - 1 | GoaGoa |
| 20 Apr 21 | r03 | Al SharjahAl Sharjah | 4 - 1 | PakhtakorPakhtakor |
| 20 Apr 21 | r03 | Al-SaddAl-Sadd | 3 - 1 | Al-WehdatAl-Wehdat |
| 20 Apr 21 | r03 | Foolad FCFoolad FC | 1 - 1 | Al Nassr FCAl Nassr FC |
| 21 Apr 21 | r03 | Al-Duhail SCAl-Duhail SC | 4 - 3 | EsteghlalEsteghlal |
| 21 Apr 21 | r03 | Al HilalAl Hilal | 3 - 1 | IstiklolIstiklol |
| 21 Apr 21 | r03 | OlmaliqOlmaliq | 2 - 1 | Shabab Al-Ahli DubaiShabab Al-Ahl |
| 21 Apr 21 | r03 | Al-Shorta SCAl-Shorta SC | 0 - 3 | Al-Ahli Saudi FCAl-Ahli Saudi |
| |
| 23 Apr 21 | r04 | Al-Rayyan SCAl-Rayyan SC | 0 - 1 | Al WahdaAl Wahda |
| 23 Apr 21 | r04 | Tractor SaziTractor Sazi | 1 - 0 | Al-Quwa Al-JawiyaAl-Quwa Al-Ja |
| 23 Apr 21 | r04 | GoaGoa | 0 - 4 | PersepolisPersepolis |
| 23 Apr 21 | r04 | PakhtakorPakhtakor | 1 - 1 | Al SharjahAl Sharjah |
| 23 Apr 21 | r04 | Al-WehdatAl-Wehdat | 0 - 2 | Al-SaddAl-Sadd |
| 23 Apr 21 | r04 | Al Nassr FCAl Nassr FC | 2 - 0 | Foolad FCFoolad FC |
| 24 Apr 21 | r04 | Al-Ahli Saudi FCAl-Ahli Saudi | 2 - 1 | Al-Shorta SCAl-Shorta SC |
| 24 Apr 21 | r04 | IstiklolIstiklol | 4 - 1 | Al HilalAl Hilal |
| 24 Apr 21 | r04 | Shabab Al-Ahli DubaiShabab Al-Ahl | 3 - 1 | OlmaliqOlmaliq |
| 24 Apr 21 | r04 | EsteghlalEsteghlal | 2 - 2 | Al-Duhail SCAl-Duhail SC |
| |
| 26 Apr 21 | r05 | Al WahdaAl Wahda | 1 - 0 | PersepolisPersepolis |
| 26 Apr 21 | r05 | Tractor SaziTractor Sazi | 0 - 0 | PakhtakorPakhtakor |
| 26 Apr 21 | r05 | Al-Rayyan SCAl-Rayyan SC | 1 - 1 | GoaGoa |
| 26 Apr 21 | r05 | Al Nassr FCAl Nassr FC | 1 - 2 | Al-WehdatAl-Wehdat |
| 26 Apr 21 | r05 | Al-Quwa Al-JawiyaAl-Quwa Al-Ja | 2 - 3 | Al SharjahAl Sharjah |
| 26 Apr 21 | r05 | Foolad FCFoolad FC | 0 - 1 | Al-SaddAl-Sadd |
| 27 Apr 21 | r05 | Al-Shorta SCAl-Shorta SC | 2 - 1 | Al-Duhail SCAl-Duhail SC |
| 27 Apr 21 | r05 | Shabab Al-Ahli DubaiShabab Al-Ahl | 0 - 1 | IstiklolIstiklol |
| 27 Apr 21 | r05 | OlmaliqOlmaliq | 0 - 3 | Al HilalAl Hilal |
| 27 Apr 21 | r05 | Al-Ahli Saudi FCAl-Ahli Saudi | 0 - 0 | EsteghlalEsteghlal |
| |
| 29 Apr 21 | r06 | PersepolisPersepolis | 4 - 2 | Al-Rayyan SCAl-Rayyan SC |
| 29 Apr 21 | r06 | PakhtakorPakhtakor | 1 - 0 | Al-Quwa Al-JawiyaAl-Quwa Al-Ja |
| 29 Apr 21 | r06 | GoaGoa | 0 - 2 | Al WahdaAl Wahda |
| 29 Apr 21 | r06 | Al SharjahAl Sharjah | 0 - 2 | Tractor SaziTractor Sazi |
| 29 Apr 21 | r06 | Al-SaddAl-Sadd | 1 - 2 | Al Nassr FCAl Nassr FC |
| 29 Apr 21 | r06 | Al-WehdatAl-Wehdat | 1 - 0 | Foolad FCFoolad FC |
| 30 Apr 21 | r06 | EsteghlalEsteghlal | 1 - 0 | Al-Shorta SCAl-Shorta SC |
| 30 Apr 21 | r06 | Al HilalAl Hilal | 0 - 2 | Shabab Al-Ahli DubaiShabab Al-Ahl |
| 30 Apr 21 | r06 | IstiklolIstiklol | 1 - 2 | OlmaliqOlmaliq |
| 30 Apr 21 | r06 | Al-Duhail SCAl-Duhail SC | 1 - 1 | Al-Ahli Saudi FCAl-Ahli Saudi |
| |
| 22 Jun 21 | r01 | Pohang SteelersPohang Steele | 2 - 0 | RatchaburiRatchaburi |
| 22 Jun 21 | r01 | Johor Darul TazimJohor Darul T | 0 - 1 | Nagoya GrampusNagoya Grampu |
| |
| 23 Jun 21 | Qualifier | Shanghai East Asia FCShanghai East | 0 - 1 | Kaya FC–IloiloKaya FC–Iloil |
| |
| 24 Jun 21 | r01 | Guangzhou EvergrandeGuangzhou Eve | 0 - 2 | Cerezo OsakaCerezo Osaka |
| 24 Jun 21 | r01 | KitcheeKitchee | 2 - 0 | Port FCPort FC |
| |
| 25 Jun 21 | r02 | Nagoya GrampusNagoya Grampu | 3 - 0 | Pohang SteelersPohang Steele |
| 25 Jun 21 | r02 | RatchaburiRatchaburi | 0 - 1 | Johor Darul TazimJohor Darul T |
| |
| 25 Jun 21 | r01 | Tampines RoversTampines Rove | 0 - 2 | Gamba OsakaGamba Osaka |
| 25 Jun 21 | r01 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 1 | Chiangrai UnitedChiangrai Uni |
| 26 Jun 21 | r01 | BG Pathum UnitedBG Pathum Uni | 4 - 1 | Kaya FC–IloiloKaya FC–Iloil |
| 26 Jun 21 | r01 | Ceres–NegrosCeres–Negros | 1 - 1 | Beijing GuoanBeijing Guoan |
| 26 Jun 21 | r01 | ViettelViettel | 0 - 1 | Ulsan Hyundai FCUlsan Hyundai |
| 26 Jun 21 | r01 | Kawasaki FrontaleKawasaki Fron | 3 - 2 | Daegu FCDaegu FC |
| |
| 27 Jun 21 | r02 | Port FCPort FC | 3 - 0 | Guangzhou EvergrandeGuangzhou Eve |
| 27 Jun 21 | r02 | Cerezo OsakaCerezo Osaka | 2 - 1 | KitcheeKitchee |
| |
| 28 Jun 21 | r03 | RatchaburiRatchaburi | 0 - 4 | Nagoya GrampusNagoya Grampu |
| 28 Jun 21 | r03 | Pohang SteelersPohang Steele | 4 - 1 | Johor Darul TazimJohor Darul T |
| |
| 28 Jun 21 | r02 | Chiangrai UnitedChiangrai Uni | 1 - 0 | Tampines RoversTampines Rove |
| 28 Jun 21 | r02 | Gamba OsakaGamba Osaka | 2 - 2 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 29 Jun 21 | r02 | Ulsan Hyundai FCUlsan Hyundai | 2 - 0 | BG Pathum UnitedBG Pathum Uni |
| 29 Jun 21 | r02 | Daegu FCDaegu FC | 7 - 0 | Ceres–NegrosCeres–Negros |
| 29 Jun 21 | r02 | Kaya FC–IloiloKaya FC–Iloil | 0 - 5 | ViettelViettel |
| 29 Jun 21 | r02 | Beijing GuoanBeijing Guoan | 0 - 7 | Kawasaki FrontaleKawasaki Fron |
| |
| 30 Jun 21 | r03 | Cerezo OsakaCerezo Osaka | 1 - 1 | Port FCPort FC |
| 30 Jun 21 | r03 | Guangzhou EvergrandeGuangzhou Eve | 0 - 1 | KitcheeKitchee |
| |
| 01 Jul 21 | r04 | Johor Darul TazimJohor Darul T | 0 - 2 | Pohang SteelersPohang Steele |
| 01 Jul 21 | r04 | Nagoya GrampusNagoya Grampu | 3 - 0 | RatchaburiRatchaburi |
| |
| 01 Jul 21 | r03 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 9 - 0 | Tampines RoversTampines Rove |
| 01 Jul 21 | r03 | Chiangrai UnitedChiangrai Uni | 1 - 1 | Gamba OsakaGamba Osaka |
| 02 Jul 21 | r03 | Kaya FC–IloiloKaya FC–Iloil | 0 - 3 | Ulsan Hyundai FCUlsan Hyundai |
| 02 Jul 21 | r03 | Kawasaki FrontaleKawasaki Fron | 8 - 0 | Ceres–NegrosCeres–Negros |
| 02 Jul 21 | r03 | Daegu FCDaegu FC | 5 - 0 | Beijing GuoanBeijing Guoan |
| 02 Jul 21 | r03 | BG Pathum UnitedBG Pathum Uni | 2 - 0 | ViettelViettel |
| |
| 03 Jul 21 | r04 | Port FCPort FC | 0 - 3 | Cerezo OsakaCerezo Osaka |
| 03 Jul 21 | r04 | KitcheeKitchee | 1 - 0 | Guangzhou EvergrandeGuangzhou Eve |
| |
| 04 Jul 21 | r05 | RatchaburiRatchaburi | 0 - 0 | Pohang SteelersPohang Steele |
| 04 Jul 21 | r05 | Nagoya GrampusNagoya Grampu | 2 - 1 | Johor Darul TazimJohor Darul T |
| |
| 04 Jul 21 | r04 | Tampines RoversTampines Rove | 0 - 4 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 04 Jul 21 | r04 | Gamba OsakaGamba Osaka | 1 - 1 | Chiangrai UnitedChiangrai Uni |
| 05 Jul 21 | r04 | Ulsan Hyundai FCUlsan Hyundai | 2 - 1 | Kaya FC–IloiloKaya FC–Iloil |
| 05 Jul 21 | r04 | Ceres–NegrosCeres–Negros | 0 - 2 | Kawasaki FrontaleKawasaki Fron |
| 05 Jul 21 | r04 | Beijing GuoanBeijing Guoan | 0 - 3 | Daegu FCDaegu FC |
| 05 Jul 21 | r04 | ViettelViettel | 1 - 3 | BG Pathum UnitedBG Pathum Uni |
| |
| 06 Jul 21 | r05 | Cerezo OsakaCerezo Osaka | 5 - 0 | Guangzhou EvergrandeGuangzhou Eve |
| 06 Jul 21 | r05 | Port FCPort FC | 1 - 1 | KitcheeKitchee |
| |
| 07 Jul 21 | r06 | Pohang SteelersPohang Steele | 1 - 1 | Nagoya GrampusNagoya Grampu |
| 07 Jul 21 | r06 | Johor Darul TazimJohor Darul T | 0 - 0 | RatchaburiRatchaburi |
| |
| 07 Jul 21 | r05 | Gamba OsakaGamba Osaka | 8 - 1 | Tampines RoversTampines Rove |
| 07 Jul 21 | r05 | Chiangrai UnitedChiangrai Uni | 1 - 3 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 08 Jul 21 | r05 | Kaya FC–IloiloKaya FC–Iloil | 0 - 1 | BG Pathum UnitedBG Pathum Uni |
| 08 Jul 21 | r05 | Beijing GuoanBeijing Guoan | 2 - 3 | Ceres–NegrosCeres–Negros |
| 08 Jul 21 | r05 | Ulsan Hyundai FCUlsan Hyundai | 3 - 0 | ViettelViettel |
| 08 Jul 21 | r05 | Daegu FCDaegu FC | 1 - 3 | Kawasaki FrontaleKawasaki Fron |
| |
| 09 Jul 21 | r06 | KitcheeKitchee | 0 - 0 | Cerezo OsakaCerezo Osaka |
| 09 Jul 21 | r06 | Guangzhou EvergrandeGuangzhou Eve | 1 - 5 | Port FCPort FC |
| 10 Jul 21 | r06 | Tampines RoversTampines Rove | 0 - 3 | Chiangrai UnitedChiangrai Uni |
| 10 Jul 21 | r06 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 1 | Gamba OsakaGamba Osaka |
| 11 Jul 21 | r06 | ViettelViettel | 1 - 0 | Kaya FC–IloiloKaya FC–Iloil |
| 11 Jul 21 | r06 | Ceres–NegrosCeres–Negros | 0 - 4 | Daegu FCDaegu FC |
| 11 Jul 21 | r06 | Kawasaki FrontaleKawasaki Fron | 4 - 0 | Beijing GuoanBeijing Guoan |
| 11 Jul 21 | r06 | BG Pathum UnitedBG Pathum Uni | 0 - 2 | Ulsan Hyundai FCUlsan Hyundai |
| |
| 13 Sep 21 | QF | EsteghlalEsteghlal | 0 - 2 | Al HilalAl Hilal |
| 14 Sep 21 | QF | Nagoya GrampusNagoya Grampu | 4 - 2 | Daegu FCDaegu FC |
| 14 Sep 21 | QF | Ulsan Hyundai FCUlsan Hyundai | 0 - 0 | Kawasaki FrontaleKawasaki Fron |
| 14 Sep 21 | QF | IstiklolIstiklol | 0 - 1 | PersepolisPersepolis |
| 14 Sep 21 | QF | Al Nassr FCAl Nassr FC | 1 - 0 | Tractor SaziTractor Sazi |
| 14 Sep 21 | QF | Al SharjahAl Sharjah | 1 - 1 | Al WahdaAl Wahda |
| 15 Sep 21 | QF | Jeonbuk Hyundai MotorsJeonbuk Hyund | 1 - 1 | BG Pathum UnitedBG Pathum Uni |
| 15 Sep 21 | QF | Cerezo OsakaCerezo Osaka | 0 - 1 | Pohang SteelersPohang Steele |
| |
| 16 Oct 21 | r00 | Al WahdaAl Wahda | 1 - 5 | Al Nassr FCAl Nassr FC |
| 16 Oct 21 | r00 | PersepolisPersepolis | 0 - 3 | Al HilalAl Hilal |
| 17 Oct 21 | r00 | Pohang SteelersPohang Steele | 3 - 0 | Nagoya GrampusNagoya Grampu |
| 17 Oct 21 | r00 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 3 | Ulsan Hyundai FCUlsan Hyundai |
| 19 Oct 21 | r00 | Al Nassr FCAl Nassr FC | 1 - 2 | Al HilalAl Hilal |
| 20 Oct 21 | r00 | Ulsan Hyundai FCUlsan Hyundai | 1 - 1 | Pohang SteelersPohang Steele |
| 23 Nov 21 | r00 | Al HilalAl Hilal | 2 - 0 | Pohang SteelersPohang Steele |
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