Nam Se-in

{{short description|South Korean footballer}}

{{Use dmy dates|date=September 2024}}

{{family name hatnote|Nam||lang=Korean}}

{{Infobox football biography

| name = Nam Se-in
남세인

| fullname =

| birth_date = {{birth date and age|1993|1|15|df=yes}}

| image =

| birth_place = South Korea

| height = {{height|m=1.67}}

| position = Midfielder

| currentclub = UKM

| clubnumber = 26

| youthyears1 = | youthclubs1 = Dong-eui University

| years1 = 2014 | clubs1 = Daegu | caps1 = 0 | goals1 = 0

| years2 = 2016–2017 | clubs2 = Académico de Viseu | 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

| ntupdate =

}}

Nam Se-in ({{Korean|hangul=남세인}}; born 15 January 1993) is a South Korean football player who plays for Malaysia Premier League club UKM as an attacking midfielder.