| PBZ | Ansan Greeners | WPI | Anseong Citizen | LEP | Asan United | KWC | Bucheon FC 1995 | | BAW | Busan I'Park | JWF | Busan TC | VDP | Byeoksan Players | JVT | Changwon | | SMU | Cheonan City | JVU | Cheongju City | UNY | Cheongju Showking | TDW | Cheongsol | | VTX | Chonbuk Motors B | ELB | Chonbuk Motors | SMT | Chuncheon Citizen | LEN | Chungbuk Cheongju | | JVV | Chungju Hummel | KWD | Chungnam Asan | JM | Chunnam Dragons | VUW | Daegu Cheongsol | | VCK | Daegu FC B | ELC | Daegu FC | UOE | Daejeon Seobu | DWF | Daejon Citizen | | JWD | Daejon KHNP | JWC | Daejon Korail | TDL | Dangjin Citizen | JVY | FC Anyang | | TTH | FC Avenir | JWB | FC Mokpo | SQL | FC Namdong | EUO | FC Seoul | | PGF | FC Uijeongbu | JVW | Gangneung | GYE | Gangwon | TTG | Geoje Citizen | | VUX | Geonyung | WMM | Geumsan Ginseng | VUU | Gijang United | BVY | Gimcheon Sangmu | | JVX | Gimhae FC | TDY | Gimhae Jaemics | LEK | Gimpo FC | SPN | Goyang Citizen | | UNU | Goyang Happiness | JVS | Goyang Hi | TSW | Goyang KH | ISY | Gwangju FC | | LEL | Gyeongju Citizen | LEO | Gyeongju KHNP | FGA | Gyeongnam | WPH | Haman | | LEX | Hwaseong | SPK | Hyochang | SMS | Icheon Citizen | UOB | Incheon Ganseok | | VUV | Incheon Seogot | EMT | Incheon United | WML | Jecheon Citizen | DXI | Jeju SK | | SNA | Jeonju Citizen | VEA | Jeonju OFC | WOQ | Jincheon HR | SMX | Jinju Citizen | | DWG | Korea University | UOD | Mokpo Gatdangdae | VDM | Namyangju | LEV | Nowon United | | SGQ | Paju Frontier | LEW | Pocheon Citizen | CBO | Pohang Steelers | BGL | Posco Atoms | | TTL | Pyeongchang | SMY | Pyeongtaek | BVK | Royal Korea | SPL | SMC Engineering | | VUR | Sejong SA | UNZ | Sejong Vanesse | UOA | Sejong Wookil | UOC | Seogu Hwajeong | | VDY | Seongdang | EUJ | Seongnam Ilhwa | WOX | Seosan Pioneer | NNS | Seoul E-Land | | LEM | Seoul FC Martyrs | SQU | Seoul Jungnang | VDN | Shinan | RVX | Siheung Citizen | | SPM | Songwol | BTU | Suwon Bluewings | JVZ | Suwon FC | SMV | Ulsan Citizen | | JWE | Ulsan Dolphins | BGJ | Ulsan HD | WPJ | Ulsan Nam-gu | TDK | Yangcheon TNT | | SMR | Yangju Citizen | VDO | Yangju Deokkye | SMZ | Yangpyeong | VDZ | Yangsan Eogok | | TDM | Yeoju FC | SPO | Yeoncheon | JWA | Yongin City* | WHZ | Yongin FC |
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