2022
- I Live Alone (Himself)
- SBS Gayo Daejeon - Host
2021
- I Live Alone (Himself)
- TaengKey Box - Host
- SBS Gayo Daejeon - Host
2020
- DoReMi Market (Himself)
2019
- Hit-and-Run Squad (Dong-soo)
- DoReMi Market (Himself)
2018
- Keyword#Boa
- Key-log
- Cheongdam Key-chin - Host
- Breakers - Host
- DoReMi Market (Himself)
2017
- Master Key (Himself) - Cast
- The Guardians -Gong Kyung-soo
- M! Countdown (Himself) -Host
- Save the Green Planet (Musical) -Byeong Gu
2016
- Drinking Solo Season 1 (Himself)
- M! Countdown (Himself) -Host
- Seoul Fashion (Himself) -collaboration between JTBC and CeCi
- In the Heights (Musical) -Usnavi
- Save the Green Planet (Musical) -Byeong Gu
2015
- SMTOWN The Stage (Himself) -Documentary of SM Town
- Make An Order (Himself) -Co-Host with Jun Hyun-moo
- Key's Knowhow (Himself) -broadcast on Mnet's Official YouTube Channel
- My Little Television (Himself) -broadcast on Lifestyle & Pet
- M! Countdown (Himself) -Host
- School Oz (Musical) -David
- Chess (Musical) -Anatoly Sergievsky
- In the Heights (Musical) -Usnavi
2014
- 7 Hungry Houseguests (Himself) -Ethiopia Episode
- Stargazing (Himself) -with Kang Ho-dong
- We Got Married Global Edition (Himself) -with Arisa Yagi
- The Three Muskateers (Musical) -D'Artagnan
- Zorro (Musical) -Zorro
2013
- Bonnie and Clyde (Musical) -Clyde Chestnut Barrow
- The Three Muskateers (Musical) -D'Artagnan
2012
- I AM. (Himself) -Documentary of SM Town
- Salamander Guru and The Shadows (Himself) -cameo
- Catch Me If You Can (Musical) -Frank Abagnale, Jr.
2011
- Moon Night '90 (Lee Hyun-do)
2010
- Rising Idol (Cast Member) with Dongho from U-KISS and Thunder from MBLAQ
2007
- Attack on the Pin-Up Boys (Himself) -Backup Dancer