| Joo Ik-seong | |
| Birth Date: | 10 September 1992 |
| Birth Place: | Seoul, South Korea |
| Height: | 1.77 m |
| Currentclub: | Hang Yuen |
| Clubnumber: | 7 |
| Position: | Midfielder |
| Youthclubs1: | Taesung High School |
| Youthyears1: | 2008–2010 |
| Years1: | 2012–2013 |
| Clubs1: | Seoul |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2014 |
| Caps2: | 2 |
| Goals2: | 0 |
| Years3: | 2015 |
| Clubs3: | Yongin City |
| Caps3: | 16 |
| Goals3: | 1 |
| Years4: | 2016 |
| Clubs4: | Hwaseong |
| Years5: | 2017–2019 |
| Clubs5: | Yangpyeong |
| Years6: | 2019–2020 |
| Clubs6: | Hang Yuen |
| Years7: | 2020–2021 |
| Caps7: | 33 |
| Goals7: | 21 |
| Years8: | 2022– |
| Clubs8: | Hang Yuen |
| Nationalyears1: | 2008–2009 |
| Nationalteam1: | South Korea U17 |
| Nationalcaps1: | 10 |
| Nationalgoals1: | 0 |
| Club-Update: | 13:05, 13 May 2020 (UTC) |
| Hangul: | 주익성 |
| Mr: | Chu Iksŏng |
| Rr: | Ju Ikseong |
Joo Ik-seong (; born 10 September 1992) is a South Korean professional footballer who plays as a midfielder for Hang Yuen and the South Korea national team.
| Club | Season | League | Cup | Continental | Other | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||
| Seoul | 2012 | K-League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2013 | K League Classic | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| Total | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Daejeon Citizen | 2014 | K League Challenge | 2 | 0 | 1[1] | 0 | – | 0 | 0 | 3 | 0 | ||
| Yongin City | 2015 | Korea National League | 16 | 1 | 0 | 0 | – | 0 | 0 | 16 | 1 | ||
| Hwaseong | 2016 | K3 League | ? | ? | 1 | 0 | – | 0 | 0 | 1 | 0 | ||
| Hang Yuen | 2019 | TFPL | 21 | 13 | 0 | 0 | 5[2] | 2 | 0 | 0 | 26 | 15 | |
| Taichung Futuro | 2020 | 5 | 1 | 0 | 0 | – | 0 | 0 | 5 | 1 | |||
| Hang Yuen | 2022 | – | |||||||||||
| Career total | 44 | 15 | 2 | 0 | 5 | 2 | 0 | 0 | 30 | 4 | |||