| Competition: | Reserve League |
| Season: | 2006 |
| Dates: | 30 March – 26 October 2006 |
| Winners: | Group A: FC Seoul Group B: Incheon United Group C: Jeonnam Dragons Championship: Incheon United |
| Best Player: | Lee Keun-ho[1] |
| League Topscorer: | Song Geun-su (11 goals)[2] |
| Prevseason: | 2005 |
| Nextseason: | 2007 |
The 2006 Korean Professional Football Reserve League was the eighth season of the R League. Incheon United won the national title for the first time after defeating Busan IPark in the Championship final.
| width=20 | Pos | width=230 | Team | width=30 abbr="Played" | Pld | width=30 abbr="Won" | W | width=30 abbr="Draw" | D | width=30 abbr="Lost" | L | width=35 abbr="Goals for" | GF | width=35 abbr="Goals against" | GA | width=35 abbr="Goal difference" | GD | width=40 abbr="Points" | Pts | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | FC Seoul (C) | 18 | 8 | 3 | 7 | 31 | 27 | +4 | 27 | Qualification for the Championship | ||||||||||
| 2 | Jeju United | 18 | 7 | 5 | 6 | 20 | 24 | -4 | 26 | |||||||||||
| 3 | Seongnam Ilhwa Chunma | 18 | 6 | 6 | 6 | 20 | 17 | +3 | 24 | |||||||||||
| 4 | Gwangju Sangmu | 18 | 6 | 4 | 8 | 23 | 26 | -3 | 22 |
| width=20 | Pos | width=230 | Team | width=30 abbr="Played" | Pld | width=30 abbr="Won" | W | width=30 abbr="Draw" | D | width=30 abbr="Lost" | L | width=35 abbr="Goals for" | GF | width=35 abbr="Goals against" | GA | width=35 abbr="Goal difference" | GD | width=40 abbr="Points" | Pts | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Incheon United (C) | 18 | 9 | 4 | 5 | 30 | 21 | +9 | 31 | Qualification for the Championship | ||||||||||
| 2 | Korean Police | 18 | 8 | 3 | 7 | 32 | 33 | -1 | 27 | |||||||||||
| 3 | Jeonbuk Hyundai Motors | 18 | 7 | 3 | 8 | 31 | 31 | 0 | 24 | |||||||||||
| 4 | Suwon Samsung Bluewings | 18 | 5 | 4 | 9 | 26 | 34 | -8 | 19 |
| width=20 | Pos | width=230 | Team | width=30 abbr="Played" | Pld | width=30 abbr="Won" | W | width=30 abbr="Draw" | D | width=30 abbr="Lost" | L | width=35 abbr="Goals for" | GF | width=35 abbr="Goals against" | GA | width=35 abbr="Goal difference" | GD | width=40 abbr="Points" | Pts | Qualification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Jeonnam Dragons (C) | 18 | 9 | 4 | 5 | 31 | 20 | +11 | 31 | Qualification for the Championship | ||||||||||
| 2 | Busan IPark | 18 | 8 | 4 | 6 | 28 | 28 | 0 | 28 | |||||||||||
| 3 | Ulsan Hyundai Horang-i | 18 | 6 | 5 | 7 | 21 | 27 | -6 | 23 | |||||||||||
| 4 | Pohang Steelers | 18 | 5 | 3 | 10 | 21 | 26 | -5 | 18 |
----
----Incheon United won 2–0 on aggregate.