| 27 Feb 21 | r01   | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 0 | FC SeoulFC Seoul |
| 27 Feb 21 | r01 | Daegu FCDaegu FC | 1 - 1 | Suwon FCSuwon FC |
| 28 Feb 21 | r01 | Pohang SteelersPohang Steele | 2 - 1 | Incheon United FCIncheon Unite |
| 28 Feb 21 | r01 | Suwon Samsung BluewingsSuwon Samsung | 1 - 0 | Gwangju FCGwangju FC |
| 01 Mar 21 | r01 | Ulsan Hyundai FCUlsan Hyundai | 5 - 0 | Gangwon FCGangwon FC |
| 01 Mar 21 | r01 | Seongnam FCSeongnam FC | 0 - 0 | Jeju United FCJeju United F |
| |
| 06 Mar 21 | r02 | Jeju United FCJeju United F | 1 - 1 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 06 Mar 21 | r02 | Gwangju FCGwangju FC | 0 - 1 | Ulsan Hyundai FCUlsan Hyundai |
| 06 Mar 21 | r02 | Incheon United FCIncheon Unite | 2 - 1 | Daegu FCDaegu FC |
| 06 Mar 21 | r02 | Gangwon FCGangwon FC | 1 - 3 | Pohang SteelersPohang Steele |
| 07 Mar 21 | r02 | Suwon Samsung BluewingsSuwon Samsung | 1 - 0 | Seongnam FCSeongnam FC |
| 07 Mar 21 | r02 | FC SeoulFC Seoul | 3 - 0 | Suwon FCSuwon FC |
| |
| 09 Mar 21 | r03 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 1 | Gangwon FCGangwon FC |
| 09 Mar 21 | r03 | Ulsan Hyundai FCUlsan Hyundai | 3 - 1 | Incheon United FCIncheon Unite |
| 09 Mar 21 | r03 | Jeju United FCJeju United F | 1 - 0 | Pohang SteelersPohang Steele |
| 10 Mar 21 | r03 | Daegu FCDaegu FC | 1 - 4 | Gwangju FCGwangju FC |
| 10 Mar 21 | r03 | Seongnam FCSeongnam FC | 1 - 0 | FC SeoulFC Seoul |
| 10 Mar 21 | r03 | Suwon FCSuwon FC | 0 - 0 | Suwon Samsung BluewingsSuwon Samsung |
| |
| 13 Mar 21 | r04 | Daegu FCDaegu FC | 1 - 1 | Jeju United FCJeju United F |
| 13 Mar 21 | r04 | Gwangju FCGwangju FC | 0 - 2 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 13 Mar 21 | r04 | Pohang SteelersPohang Steele | 1 - 1 | Ulsan Hyundai FCUlsan Hyundai |
| 13 Mar 21 | r04 | Incheon United FCIncheon Unite | 0 - 1 | FC SeoulFC Seoul |
| 14 Mar 21 | r04 | Suwon FCSuwon FC | 1 - 2 | Seongnam FCSeongnam FC |
| 14 Mar 21 | r04 | Suwon Samsung BluewingsSuwon Samsung | 1 - 1 | Gangwon FCGangwon FC |
| |
| 16 Mar 21 | r05 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 3 - 2 | Daegu FCDaegu FC |
| 16 Mar 21 | r05 | Ulsan Hyundai FCUlsan Hyundai | 0 - 0 | Jeju United FCJeju United F |
| 17 Mar 21 | r05 | Pohang SteelersPohang Steele | 0 - 3 | Suwon Samsung BluewingsSuwon Samsung |
| 17 Mar 21 | r05 | Gangwon FCGangwon FC | 0 - 0 | Seongnam FCSeongnam FC |
| 17 Mar 21 | r05 | FC SeoulFC Seoul | 2 - 1 | Gwangju FCGwangju FC |
| 17 Mar 21 | r05 | Incheon United FCIncheon Unite | 4 - 1 | Suwon FCSuwon FC |
| |
| 20 Mar 21 | r06 | Jeju United FCJeju United F | 1 - 1 | Gwangju FCGwangju FC |
| 20 Mar 21 | r06 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 1 - 1 | Suwon FCSuwon FC |
| 21 Mar 21 | r06 | Gangwon FCGangwon FC | 2 - 0 | Incheon United FCIncheon Unite |
| 21 Mar 21 | r06 | Seongnam FCSeongnam FC | 2 - 1 | Pohang SteelersPohang Steele |
| 21 Mar 21 | r06 | Suwon Samsung BluewingsSuwon Samsung | 1 - 2 | FC SeoulFC Seoul |
| 21 Mar 21 | r06 | Daegu FCDaegu FC | 2 - 1 | Ulsan Hyundai FCUlsan Hyundai |
| |
| 02 Apr 21 | r07 | Pohang SteelersPohang Steele | 0 - 0 | Daegu FCDaegu FC |
| 03 Apr 21 | r07 | Suwon Samsung BluewingsSuwon Samsung | 1 - 3 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 03 Apr 21 | r07 | Seongnam FCSeongnam FC | 0 - 1 | Ulsan Hyundai FCUlsan Hyundai |
| 03 Apr 21 | r07 | FC SeoulFC Seoul | 0 - 1 | Gangwon FCGangwon FC |
| 04 Apr 21 | r07 | Suwon FCSuwon FC | 2 - 1 | Jeju United FCJeju United F |
| 04 Apr 21 | r07 | Gwangju FCGwangju FC | 2 - 1 | Incheon United FCIncheon Unite |
| |
| 06 Apr 21 | r08  | Pohang SteelersPohang Steele | 1 - 3 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 06 Apr 21 | r08 | Daegu FCDaegu FC | 0 - 0 | Seongnam FCSeongnam FC |
| 07 Apr 21 | r08 | Ulsan Hyundai FCUlsan Hyundai | 3 - 2 | FC SeoulFC Seoul |
| 07 Apr 21 | r08 | Gwangju FCGwangju FC | 2 - 0 | Suwon FCSuwon FC |
| 07 Apr 21 | r08 | Incheon United FCIncheon Unite | 0 - 0 | Suwon Samsung BluewingsSuwon Samsung |
| 07 Apr 21 | r08 | Jeju United FCJeju United F | 1 - 1 | Gangwon FCGangwon FC |
| |
| 10 Apr 21 | r09 | Gangwon FCGangwon FC | 3 - 0 | Daegu FCDaegu FC |
| 10 Apr 21 | r09 | FC SeoulFC Seoul | 1 - 2 | Pohang SteelersPohang Steele |
| 10 Apr 21 | r09 | Seongnam FCSeongnam FC | 2 - 0 | Gwangju FCGwangju FC |
| 11 Apr 21 | r09 | Jeju United FCJeju United F | 2 - 1 | Suwon Samsung BluewingsSuwon Samsung |
| 11 Apr 21 | r09 | Suwon FCSuwon FC | 0 - 1 | Ulsan Hyundai FCUlsan Hyundai |
| 11 Apr 21 | r09 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 5 - 0 | Incheon United FCIncheon Unite |
| |
| 17 Apr 21 | r10 | Suwon FCSuwon FC | 2 - 1 | Gangwon FCGangwon FC |
| 17 Apr 21 | r10 | Incheon United FCIncheon Unite | 0 - 3 | Jeju United FCJeju United F |
| 17 Apr 21 | r10 | FC SeoulFC Seoul | 0 - 1 | Daegu FCDaegu FC |
| 17 Apr 21 | r10 | Gwangju FCGwangju FC | 0 - 1 | Pohang SteelersPohang Steele |
| 18 Apr 21 | r10 | Suwon Samsung BluewingsSuwon Samsung | 3 - 0 | Ulsan Hyundai FCUlsan Hyundai |
| 18 Apr 21 | r10 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 1 - 0 | Seongnam FCSeongnam FC |
| |
| 20 Apr 21 | r11 | Gangwon FCGangwon FC | 0 - 1 | Gwangju FCGwangju FC |
| 20 Apr 21 | r11 | Pohang SteelersPohang Steele | 1 - 0 | Suwon FCSuwon FC |
| 21 Apr 21 | r11 | Ulsan Hyundai FCUlsan Hyundai | 0 - 0 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 21 Apr 21 | r11 | Seongnam FCSeongnam FC | 1 - 3 | Incheon United FCIncheon Unite |
| 21 Apr 21 | r11 | Daegu FCDaegu FC | 1 - 0 | Suwon Samsung BluewingsSuwon Samsung |
| 21 Apr 21 | r11 | Jeju United FCJeju United F | 2 - 1 | FC SeoulFC Seoul |
| |
| 24 Apr 21 | r12 | Pohang SteelersPohang Steele | 0 - 0 | Jeju United FCJeju United F |
| 24 Apr 21 | r12 | Gwangju FCGwangju FC | 0 - 1 | Daegu FCDaegu FC |
| 24 Apr 21 | r12 | Gangwon FCGangwon FC | 1 - 1 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
| 25 Apr 21 | r12 | Incheon United FCIncheon Unite | 0 - 0 | Ulsan Hyundai FCUlsan Hyundai |
| 25 Apr 21 | r12 | Suwon FCSuwon FC | 1 - 1 | FC SeoulFC Seoul |
| 25 Apr 21 | r12 | Seongnam FCSeongnam FC | 0 - 1 | Suwon Samsung BluewingsSuwon Samsung |
| |
| 30 Apr 21 | r13 | FC SeoulFC Seoul | 2 - 2 | Seongnam FCSeongnam FC |
| 01 May 21 | r13 | Suwon FCSuwon FC | 2 - 4 | Daegu FCDaegu FC |
| 01 May 21 | r13 | Suwon Samsung BluewingsSuwon Samsung | 1 - 1 | Pohang SteelersPohang Steele |
| 01 May 21 | r13 | Ulsan Hyundai FCUlsan Hyundai | 2 - 0 | Gwangju FCGwangju FC |
| 02 May 21 | r13 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 1 - 1 | Jeju United FCJeju United F |
| 02 May 21 | r13 | Incheon United FCIncheon Unite | 1 - 0 | Gangwon FCGangwon FC |
| |
| 08 May 21 | r14 | Daegu FCDaegu FC | 3 - 0 | Incheon United FCIncheon Unite |
| 08 May 21 | r14 | Jeju United FCJeju United F | 1 - 3 | Suwon FCSuwon FC |
| 08 May 21 | r14 | Pohang SteelersPohang Steele | 1 - 1 | Gangwon FCGangwon FC |
| 09 May 21 | r14 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 1 - 3 | Suwon Samsung BluewingsSuwon Samsung |
| |
| 11 May 21 | r15 | Suwon FCSuwon FC | 2 - 1 | Gwangju FCGwangju FC |
| 11 May 21 | r15 | Incheon United FCIncheon Unite | 1 - 1 | Pohang SteelersPohang Steele |
| 12 May 21 | r15 | Suwon Samsung BluewingsSuwon Samsung | 3 - 2 | Jeju United FCJeju United F |
| 12 May 21 | r15 | Gangwon FCGangwon FC | 2 - 2 | Ulsan Hyundai FCUlsan Hyundai |
| |
| 15 May 21 | r16 | Gangwon FCGangwon FC | 0 - 0 | Suwon FCSuwon FC |
| 15 May 21 | r16 | Incheon United FCIncheon Unite | 2 - 1 | Gwangju FCGwangju FC |
| 16 May 21 | r16 | Jeju United FCJeju United F | 1 - 2 | Daegu FCDaegu FC |
| 16 May 21 | r16 | Ulsan Hyundai FCUlsan Hyundai | 1 - 1 | Suwon Samsung BluewingsSuwon Samsung |
| |
| 18 May 21 | r17 | Suwon FCSuwon FC | 3 - 4 | Pohang SteelersPohang Steele |
| 19 May 21 | r17 | Gwangju FCGwangju FC | 0 - 0 | Jeju United FCJeju United F |
| 19 May 21 | r17 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 4 | Ulsan Hyundai FCUlsan Hyundai |
| 19 May 21 | r17 | Suwon Samsung BluewingsSuwon Samsung | 1 - 1 | Daegu FCDaegu FC |
| |
| 21 May 21 | r18 | Suwon FCSuwon FC | 2 - 2 | Incheon United FCIncheon Unite |
| 22 May 21 | r18 | Jeju United FCJeju United F | 2 - 2 | Seongnam FCSeongnam FC |
| 22 May 21 | r18 | Ulsan Hyundai FCUlsan Hyundai | 1 - 0 | Pohang SteelersPohang Steele |
| 23 May 21 | r18 | Gwangju FCGwangju FC | 3 - 4 | Suwon Samsung BluewingsSuwon Samsung |
| 23 May 21 | r18 | Gangwon FCGangwon FC | 0 - 0 | FC SeoulFC Seoul |
| 23 May 21 | r18 | Daegu FCDaegu FC | 1 - 0 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
Team 2021 Schedules
Bucheon FC 1995
Daejeon Hana Citizen
FC Anyang
FC Seoul
Gangwon FC
Gimcheon Sangmu
Gwangju FC
Incheon United
Jeju SK
Jeonbuk Hyundai Motors
Pohang Steelers
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