| Lee Gwang-in | |
| Birth Date: | 1 July 2001 |
| Height: | 1.75 m |
| Position: | Forward |
| Currentclub: | FSV Frankfurt |
| Clubnumber: | 30 |
| Youthyears1: | 2011–2013 |
| Youthclubs1: | Oedo Elementary School |
| Youthyears2: | 2014–2015 |
| Youthclubs2: | Ulsan Hyundai |
| Youthyears3: | 2016 |
| Youthclubs3: | Paju City |
| Youthyears4: | 2017 |
| Youthclubs4: | Suwon Samsung Bluewings |
| Youthyears5: | 2018–2019 |
| Youthclubs5: | Yongdungpo Technical HS |
| Years1: | 2020–2022 |
| Caps1: | 23 |
| Goals1: | 1 |
| Years2: | 2022 |
| Clubs2: | → FC St. Pauli II (loan) |
| Caps2: | 6 |
| Goals2: | 0 |
| Years3: | 2022–2024 |
| Clubs3: | FC St. Pauli II |
| Caps3: | 53 |
| Goals3: | 10 |
| Years4: | 2024– |
| Clubs4: | FSV Frankfurt |
| Caps4: | 5 |
| Goals4: | 1 |
| Nationalteam1: | South Korea U13 |
| Nationalteam2: | South Korea U14 |
| Nationalyears3: | 2017 |
| Nationalteam3: | South Korea U16 |
| Club-Update: | 23 April 2024 |
| Nationalteam-Update: | 15 September 2020 |
| Hangul: | 이광인 |
| Hanja: | ! |
| Mr: | Lee Gwangin |
| Rr: | Lee Gwangin |
Lee Gwang-in (; born 1 July 2001) is a South Korean footballer who plays as a forward for FSV Frankfurt.