| Season | 2018 |
|---|---|
| Dates | 24 March – 24 November 2018 |
| Champions | Gyeongju Citizen (3rd title) |
| Relegated | Jeonju Citizen Seoul Jungnang |
| Matches played | 132 |
| Goals scored | 404 (3.06 per match) |
| Best Player | Choi Yong-woo[1] |
| Top goalscorer | Choi Yong-woo (16 goals)[1] |
| Best goalkeeper | Jeong Gyu-jin[1] |
| Biggest home win | Pocheon 7–0 Jungnang |
| Biggest away win | Jungnang 0–9 Hwaseong |
| Highest attendance | 1655 |
| Lowest attendance | 75 |
| Average attendance | 262 |
← 2017 2019 → | |
The 2018 K3 League Advanced was the twelfth season of amateur K3 League.
| Club | City | Stadium | Capacity | Manager |
|---|---|---|---|---|
| Cheongju City | Cheongju | Cheongju Stadium | 17,264 |  Kwon Oh-gyu
|
| Chungbuk Cheongju | Cheongju | Cheongju Stadium | 17,264 | Park Yang-hoon
|
| Chuncheon FC | Chuncheon | Chuncheon Stadium | 20,000 | Kim Yong-ho
|
| Gimpo Citizen | Gimpo | Gimpo Sports Complex | 5,068 | Oh Jong-yeo
|
| Gyeongju Citizen | Gyeongju | Gyeongju Civic Stadium | 12,199 | Kim Dae-geon
|
| Hwaseong FC | Hwaseong | Hwaseong Stadium | 35,270 | Kim Seong-nam
|
| Icheon Citizen | Icheon | Icheon Stadium | 20,305 | Lee Yeong-gi
|
| Jeonju Citizen | Jeonju | Jeonju Sports Complex | 30,000 | Yang Young-cheol
|
| Seoul Jungnang | Seoul | Jungnang Public Ground | 400 | Kim Sang-hwa
|
| Pocheon Citizen | Pocheon | Pocheon Stadium | 7,000 | Kim Jae-hyeong
|
| Pyeongtaek Citizen | Pyeongtaek | Sosabeol Reports Town | 15,000 | Lee Seong-gyun
|
| Yangpyeong FC | Yangpyeong | Yongmun Sports Park | 400 | Kim Gyeong-bum
|
| Pos | Team | Pld | W | D | L | GF | GA | GD | Pts | Qualification or relegation |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Gyeongju Citizen (C) | 22 | 16 | 2 | 4 | 46 | 21 | +25 | 50 | Qualification for the Championship final |
| 2 | Pocheon Citizen | 22 | 15 | 1 | 6 | 58 | 30 | +28 | 46 | Qualification for the Championship first round |
| 3 | Icheon Citizen | 22 | 11 | 5 | 6 | 33 | 25 | +8 | 38 | |
| 4 | Gimpo Citizen | 22 | 11 | 4 | 7 | 42 | 31 | +11 | 37 | |
| 5 | Chuncheon FC | 22 | 10 | 6 | 6 | 38 | 27 | +11 | 36 | |
| 6 | Cheongju City | 22 | 9 | 7 | 6 | 26 | 26 | 0 | 34 | |
| 7 | Hwaseong FC | 22 | 9 | 6 | 7 | 32 | 25 | +7 | 33 | |
| 8 | Yangpyeong FC | 22 | 8 | 5 | 9 | 32 | 26 | +6 | 29 | |
| 9 | Pyeongtaek Citizen | 22 | 7 | 4 | 11 | 28 | 34 | −6 | 25 | |
| 10 | Chungbuk Cheongju | 22 | 6 | 2 | 14 | 19 | 37 | −18 | 20 | |
| 11 | Jeonju Citizen (R) | 22 | 5 | 1 | 16 | 25 | 46 | −21 | 16 | Relegation to the K3 League Basic |
| 12 | Seoul Jungnang (R) | 22 | 3 | 1 | 18 | 23 | 74 | −51 | 10 |
| Home \ Away | GC | FCP | ICH | GIM | CHU | CHE | HWA | YAN | PYE | CC | JEO | SJ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gyeongju Citizen | — | 2–3 | 1–0 | 3–1 | 1–2 | 2–0 | 2–0 | 1–0 | 2–1 | 2–0 | 2–1 | 6–3 |
| Pocheon Citizen | 3–0 | — | 0–3 | 4–2 | 3–1 | 4–1 | 2–0 | 1–2 | 4–2 | 3–0 | 1–4 | 7–0 |
| Icheon Citizen | 1–1 | 2–0 | — | 3–2 | 1–4 | 1–1 | 1–1 | 1–2 | 1–0 | 1–0 | 1–2 | 1–1 |
| Gimpo Citizen | 1–1 | 2–1 | 1–2 | — | 2–1 | 1–1 | 1–0 | 0–1 | 3–1 | 2–1 | 5–0 | 5–1 |
| Chuncheon FC | 1–2 | 1–2 | 1–1 | 1–3 | — | 1–1 | 0–0 | 3–2 | 2–0 | 3–3 | 2–1 | 3–0 |
| Cheongju City | 0–4 | 1–4 | 2–1 | 0–0 | 0–0 | — | 2–0 | 1–0 | 1–1 | 2–1 | 1–0 | 5–1 |
| Hwaseong FC | 0–3 | 0–2 | 3–2 | 3–1 | 2–1 | 2–1 | — | 0–0 | 1–1 | 3–1 | 2–1 | 1–0 |
| Yangpyeong FC | 0–1 | 3–3 | 1–1 | 2–4 | 1–1 | 1–2 | 1–1 | — | 2–1 | 3–0 | 2–0 | 4–0 |
| Pyeongtaek Citizen | 2–1 | 1–4 | 2–3 | 2–0 | 0–3 | 0–0 | 2–2 | 1–0 | — | 2–0 | 5–1 | 1–0 |
| Chungbuk Cheongju | 0–2 | 2–0 | 0–2 | 1–1 | 0–1 | 0–1 | 1–1 | 1–0 | 2–1 | — | 2–1 | 2–4 |
| Jeonju Citizen | 1–4 | 0–1 | 1–3 | 1–3 | 2–3 | 1–1 | 0–2 | 2–1 | 1–0 | 0–1 | — | 2–3 |
| Seoul Jungnang | 1–3 | 1–6 | 0–1 | 1–2 | 0–3 | 1–3 | 0–9 | 1–4 | 1–2 | 3–1 | 1–3 | — |
When the first round and semi-final matches were finished as draws, their winners were decided on the regular season rankings without extra time and the penalty shoot-out.
| First round | Semi-final | Final | |||||||||||||
| 2 | Pocheon Citizen | 3 | |||||||||||||
| Gyeongju Citizen | 0 | 2 | 2 | ||||||||||||
| 5 | Chuncheon FC | 3 | |||||||||||||
| Pocheon Citizen | 1 | Icheon Citizen | 0 | 1 | 1 | ||||||||||
| Icheon Citizen | 2 | ||||||||||||||
| 3 | Icheon Citizen | 1 | |||||||||||||
| 4 | Gimpo Citizen | 1 | |||||||||||||
