| Nam Se-in 남세인 | |
| Birth Date: | 15 January 1993 |
| Birth Place: | South Korea |
| Position: | Midfielder |
| Currentclub: | UKM |
| Clubnumber: | 26 |
| Youthclubs1: | Dong-eui University |
| Years1: | 2014 |
| Clubs1: | Daegu |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2016–2017 |
| Caps2: | 1 |
| Goals2: | 0 |
| Years3: | 2017 |
| Clubs3: | → Mirandela (loan) |
| Caps3: | 12 |
| Goals3: | 5 |
| Years4: | 2018– |
| Clubs4: | UKM |
| Caps4: | 17 |
| Goals4: | 7 |
| Pcupdate: | 13 July 2018 |
Nam Se-in (; born 15 January 1993) is a South Korean football player who plays for Malaysia Premier League club UKM as an attacking midfielder.
He made his professional debut in the Segunda Liga for Académico de Viseu on 23 November 2016 in a game against Penafiel.[1]