| Lee Jae-gun 이재건 | |
| Fullname: | Lee Jae-gun |
| Birth Date: | 22 February 1997 |
| Birth Place: | Seongnam, South Korea |
| Height: | 1.80 m |
| Currentclub: | Pocheon Citizen FC |
| Clubnumber: | 97 |
| Position: | Forward |
| Youthclubs1: | Kyunghee High School |
| Youthyears2: | –2017 |
| Youthclubs2: | Songho College |
| Years1: | 2017–2019 |
| Clubs1: | Tubize-Braine |
| Caps1: | 38 |
| Goals1: | 1 |
| Years2: | 2019 |
| Clubs2: | Asan Mugunghwa |
| Caps2: | 16 |
| Goals2: | 0 |
| Years3: | 2020–2021 |
| Clubs3: | Chungnam Asan |
| Caps3: | 25 |
| Goals3: | 4 |
| Years4: | 2021–2022 |
| Clubs4: | Visakha |
| Caps4: | 30 |
| Goals4: | 8 |
| Club-Update: | 19 July 2021 |
| Hangul: | 이재건 |
| Mr: | I Chaekŏn |
| Rr: | I Jaegeon |
Lee Jae-gun (; born 22 February 1997) is a South Korean footballer who plays as a forward for K4 League club Pocheon Citizen FC.
After graduating from Kyunghee High School in Seoul,[1] Lee received several offers from professional clubs. He turned them down, however, to play for Songho College.[1] In his second season at the college, he scored five of his team's ten goals,[2] and took his school to the 2016 U-League championship game, where they lost to Korea University.[1]
He was selected to represent Korea at the 2016 Asian University Football Championships in Taebaek.[3]
In January 2017, he signed his first professional contract with A.F.C. Tubize, playing in the second-tier of Belgian football.[4] He became Tubize's sixth Korean player.[5] The team, which was purchased by a Korean company in 2014, promotes the development of Korean football by recruiting young prospects from the Asian country.[1] He made his debut on 7 January against Cercle Brugge, replacing Shean Garlito in the 89th minute.[5] [6] [7] Two months later, during a 1-1 draw against Oud-Heverlee Leuven, Lee scored his debut goal.[8] [9]