Sponsor Name: Ukendt
År grundlagt: 1983
Land: Sydkorea
Antal hold: 12
Record-holding champions: Jeonbuk Motors (9)
Reigning champion: Ulsan HD
Bedst bedømte spillere
Spillere| # | Spiller | Rankering | |
| 1 |  | Jesse Lingard | 85 |
| 2 |  | Nana Boateng | 83 |
| 3 |  | Fernando Cesinha | 83 |
| 4 |  | Hyun-Woo Jo | 83 |
| 5 |  | Young-Gwon Kim | 83 |
K League 1 Klubber
| Klub | Manager | Stadion | Sted | |
 | Daegu FC | Won-kwon Choi | Blue Arc | Daegu |
 | Daejeon Hana Citizen | Min-sung Lee | Purple Arena | Daejeon |
 | FC Seoul | Ik-soo An | Seoul Sang-am Stadium | Seoul |
 | Gangwon FC | Yong-Soo Choi | Gangneung Stadium | Gangwon-do |
 | Gwangju FC | Jung-hyo Lee | Guus Hiddink Stadium | Gwangju |
 | Incheon United | Sung-Hwan Cho | Munhak | Incheon |
 | Jeju United | Ukendt | Seogwipo | Seogwipo |
 | Jeonbuk Motors | Dan Petrescu | Jeonju Castle | Jeonju |
 | Pohang Steelers | Ki-Dong Kim | Steelyard | Pohang |
 | Suwon Bluewings | Byung-soo Kim | Big Bird Stadium | Suwon |
 | Suwon FC | Ukendt | Suwon Sports Complex | Suwon |
 | Ulsan HD | Myung-Bo Hong | Big Crown | Ulsan |
K League 1 Dommere
| Dommer | Nationalitet | |
 | Kim Jong-Hyeok | Sydkorea |
K League 1 Klubhistorie
| Sæson | Klub | |
| 2022/2023 | | Ulsan HD |
| 2021/2022 | | Ulsan HD |
| 2020/2021 | | Jeonbuk Motors |
| 2019/2020 | | Jeonbuk Motors |
| 2018/2019 | | Jeonbuk Motors |
| 2017/2018 | | Jeonbuk Motors |
| 2016/2017 | | Jeonbuk Motors |
| 2015/2016 | | FC Seoul |
| 2014/2015 | | Jeonbuk Motors |
| 2013/2014 | | Jeonbuk Motors |
| 2012/2013 | | Pohang Steelers |
| 2011/2012 | | FC Seoul |
| 2010/2011 | | Jeonbuk Motors |
| 2009/2010 | | FC Seoul |
| 2008/2009 | | Jeonbuk Motors |
| 2007/2008 | | Suwon Bluewings |
| 2006/2007 | | Pohang Steelers |
| 2005/2006 |  | Seongnam FC |
| 2004/2005 | | Ulsan HD |
| 2003/2004 | | Suwon Bluewings |
| 2002/2003 | | Seongnam FC |
| 2001/2002 | | Seongnam FC |
| 2000/2001 | | Seongnam FC |
| 1998/1999 | | Suwon Bluewings |
| 1997/1998 | | Suwon Bluewings |
| 1996/1997 |  | Busan IPark |
| 1995/1996 | | Ulsan HD |
| 1994/1995 | | Seongnam FC |
| 1993/1994 | | Seongnam FC |
| 1992/1993 | | Seongnam FC |
| 1991/1992 | | Pohang Steelers |
| 1990/1991 | | Busan IPark |