| 26 Feb 23 | r01    | Jeju United FCJeju United F | 0 - 0 | Suwon FCSuwon FC |
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| 04 Mar 23 | r02 | Daegu FCDaegu FC | 1 - 1 | Jeju United FCJeju United F |
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| 12 Mar 23 | r03 | Incheon United FCIncheon Unite | 1 - 0 | Jeju United FCJeju United F |
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| 18 Mar 23 | r04 | Jeju United FCJeju United F | 1 - 2 | FC SeoulFC Seoul |
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| 02 Apr 23 | r05 | Jeju United FCJeju United F | 1 - 3 | Ulsan Hyundai FCUlsan Hyundai |
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| 09 Apr 23 | r06 | Gangwon FCGangwon FC | 0 - 1 | Jeju United FCJeju United F |
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| 15 Apr 23 | r07 | Suwon Samsung BluewingsSuwon Samsung | 2 - 3 | Jeju United FCJeju United F |
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| 23 Apr 23 | r08 | Jeju United FCJeju United F | 0 - 2 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
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| 26 Apr 23 | r09 | Gwangju FCGwangju FC | 0 - 1 | Jeju United FCJeju United F |
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| 30 Apr 23 | r10 | Daejeon Hana CitizenDaejeon Hana | 0 - 3 | Jeju United FCJeju United F |
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| 06 May 23 | r11 | Jeju United FCJeju United F | 2 - 1 | Pohang SteelersPohang Steele |
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| 10 May 23 | r12 | Jeju United FCJeju United F | 2 - 0 | Incheon United FCIncheon Unite |
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| 14 May 23 | r13 | Suwon FCSuwon FC | 0 - 5 | Jeju United FCJeju United F |
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| 20 May 23 | r14 | FC SeoulFC Seoul | 1 - 1 | Jeju United FCJeju United F |
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| 27 May 23 | r15 | Jeju United FCJeju United F | 2 - 1 | Suwon Samsung BluewingsSuwon Samsung |
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| 03 Jun 23 | r16 | Jeju United FCJeju United F | 2 - 2 | Gangwon FCGangwon FC |
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| 06 Jun 23 | r17 | Pohang SteelersPohang Steele | 2 - 1 | Jeju United FCJeju United F |
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| 10 Jun 23 | r18 | Ulsan Hyundai FCUlsan Hyundai | 5 - 1 | Jeju United FCJeju United F |
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| 24 Jun 23 | r19 | Jeju United FCJeju United F | 1 - 1 | Daejeon Hana CitizenDaejeon Hana |
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| 01 Jul 23 | r20 | Jeonbuk Hyundai MotorsJeonbuk Hyund | 2 - 0 | Jeju United FCJeju United F |
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| 07 Jul 23 | r21 | Jeju United FCJeju United F | 1 - 2 | Daegu FCDaegu FC |
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| 11 Jul 23 | r22 | Jeju United FCJeju United F | 0 - 0 | Gwangju FCGwangju FC |
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| 16 Jul 23 | r23 | Pohang SteelersPohang Steele | 4 - 2 | Jeju United FCJeju United F |
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| 21 Jul 23 | r24 | Ulsan Hyundai FCUlsan Hyundai | 2 - 1 | Jeju United FCJeju United F |
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| 06 Aug 23 | r25 | Jeju United FCJeju United F | 1 - 1 | Gangwon FCGangwon FC |
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| 12 Aug 23 | r26 | Jeju United FCJeju United F | 3 - 0 | Suwon FCSuwon FC |
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| 18 Aug 23 | r27 | Suwon Samsung BluewingsSuwon Samsung | 1 - 0 | Jeju United FCJeju United F |
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| 26 Aug 23 | r28 | Daegu FCDaegu FC | 1 - 0 | Jeju United FCJeju United F |
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| 03 Sep 23 | r29 | Jeju United FCJeju United F | 0 - 0 | Jeonbuk Hyundai MotorsJeonbuk Hyund |
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| 16 Sep 23 | r30 | Incheon United FCIncheon Unite | 2 - 1 | Jeju United FCJeju United F |
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| 23 Sep 23 | r31 | Jeju United FCJeju United F | 1 - 3 | FC SeoulFC Seoul |
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| 01 Oct 23 | r32 | Jeju United FCJeju United F | 1 - 2 | Gwangju FCGwangju FC |
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| 08 Oct 23 | r33 | Daejeon Hana CitizenDaejeon Hana | 1 - 0 | Jeju United FCJeju United F |
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| 22 Oct 23 | r01 | Jeju United FCJeju United F | 2 - 0 | Suwon Samsung BluewingsSuwon Samsung |
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| 28 Oct 23 | r02 | Gangwon FCGangwon FC | 1 - 1 | Jeju United FCJeju United F |
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| 11 Nov 23 | r03 | Jeju United FCJeju United F | 0 - 0 | FC SeoulFC Seoul |
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| 25 Nov 23 | r04 | Jeju United FCJeju United F | 0 - 2 | Daejeon Hana CitizenDaejeon Hana |
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| 02 Dec 23 | r05 | Suwon FCSuwon FC | 1 - 1 | Jeju United FCJeju United F |
Team 2023 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
Ulsan HD
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