Seo In-guk was born on 23 October 1987 in Ulsan, South Korea. He is an actor, known for Reply 1997 (2012), The Master's Sun (2013) and Hello Monster (2015).

Make your IMDb page stand out by adding a demo reel

The Biggest Movies and TV Coming in September

"The Gentlemen" and "Slow Horses" return this fall, while the "Reacher" spin-off series "Neagley" makes its debut. See our guide of the biggest Fall TV and streaming releases.

2026 Fall TV and Streaming Watch Guide

&quot;The Gentlemen&quot; and &quot;Slow Horses&quot; return this fall, while the &quot;Reacher&quot; spin-off series &quot;Neagley&quot; makes its debut. See our guide of the biggest Fall TV and streaming releases.

Get a closer look at these actors from their many TV and streaming series roles.

Streaming Stars, Then and Now

Nam Ji-hyun and Seo In-guk in Shopping King Louie (2016)

Lee Jong-suk and Seo In-guk in No Breathing (2013)

Eun Ji-won, Shin So-yul, Seo In-guk, Jung Eun-ji, and Hoya in Reply 1997 (2012)

Kong Hyo-jin and So Ji-sub in The Master's Sun (2013)

Park Bo-gum and Seo In-guk in Hello Monster (2015)

Park Ho-san, Sung Dong-il, Jang Young-nam, Jung So-min, Seo In-guk, and Jang Dong-yoon in Project Wolf Hunting (2022)

Eoneu Nal Uri Jib Hyeongwaeuro Myeolmangyi Deuleowassda

Seo In-guk

Photos39

Known for

Credits

Actor

Soundtrack

Videos13

Personal details

Did you know

Contribute to this page

More to explore

Recently viewed