| Lee Jong-sung | |
| Caption: | Lee at a match between Suwon Samsung and Suwon FC, 2023 |
| Birth Date: | 1992 8, df=yes |
| Birth Place: | Dangjin, South Korea |
| Height: | 1.87 m |
| Position: | Midfielder |
| Currentclub: | Suwon Samsung Bluewings |
| Clubnumber: | 92 |
| Years1: | 2011– |
| Clubs1: | Suwon Samsung Bluewings |
| Caps1: | 138 |
| Goals1: | 7 |
| Years2: | 2012 |
| Clubs2: | → Sangju Sangmu (loan) |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2014 |
| Clubs3: | → Daegu FC (loan) |
| Caps3: | 31 |
| Goals3: | 0 |
| Years4: | 2021–2022 |
| Clubs4: | → Seongnam FC (loan) |
| Caps4: | 36 |
| Goals4: | 1 |
| Nationalyears1: | 2007–2008 |
| Nationalteam1: | South Korea U17 |
| Nationalcaps1: | 7 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2011 |
| Nationalteam2: | South Korea U20 |
| Nationalcaps2: | 1 |
| Nationalgoals2: | 0 |
| Nationalyears3: | 2012 |
| Nationalteam3: | South Korea U23 |
| Nationalcaps3: | 5 |
| Nationalgoals3: | 0 |
| Pcupdate: | 3 August 2022 |
Lee Jong-sung (; born 5 August 1992) is a South Korean professional footballer who plays as a midfielder for K League 1 club Suwon Samsung Bluewings.