Kob Songsit Rungnopakunsi is an actor, singer, and host signed with GMM Grammy. Born in Phra Nakhon, Kob graduated from Bangkok Christian College and went on to get a degree from Bongkok University's School of Communication Arts. Kob's real nickname is Johnny, but seeing his slim arms and long hands, his school friends called him Kob (which translates to frog) so consistently that it's the nickname he's most known by today.
| Series | The Voice Thailand 2024 | Main Host | 2027 |
| Series | The School | Kosin | 2026-01-21 |
| Series | Scent of Mali | Phraya Phiphat Kosa | 2026-02-25 |
| Movie | Serpent Beauty | Sutad | 2025-02-13 |
| Series | Thieves of Hearts | Suchat | 2025-07-14 |
| Series | Rearrange | Phichit | 2025-08-11 |
| Series | Thieves of Hearts | Luang Suchat | 2025-07-14 |
| Series | Rak OVERDOSE | Preecha | 2025-09-20 |
| Series | Zodiac Slayer | Unknown | 2024-06-28 |
| Series | The Empress of Ayodhaya | Lord of Lopburi | 2024-10-24 |
| Series | Chains of Heart | Zhou Jun Guo [Ken's father] | 2023-02-18 |
| Series | Love the Way You Lie | Wijak | 2023-01-23 |
| Series | Tricky in Love | Phum Kamthornpuwanat | 2023-11-02 |
| Series | Be My Favorite | Thawi [Botkawee's father] | 2023-05-26 |
| Series | Doctor Detective | Ram | 2023-08-21 |
| Series | Crown of Blood | Jaran | 2023-10-23 |
| Series | My Sweet Assassin | Atiphat | 2022-01-22 |
| Series | KinnPorsche: The Series | Korn | 2022-04-02 |
| Series | Friend to Enemy | Khamrong | 2022-09-24 |
| Series | Finding the Rainbow | Thanin | 2022-11-09 |
| Series | Don't Say No | Korn [Leo's father] | 2021-08-06 |
| Series | Dare to Love | Phong [Q's father] | 2021-07-08 |
| Series | Help Me! Oh My Ghost | Vihan | 2021-10-19 |
| Series | The Unidentical Twins | Songchai | 2021-05-05 |
| Series | Oh My Sweetheart | Tul | 2021-11-18 |
| Series | 55:15 Never Too Late | Songphon (age 55) | 2021-12-06 |
| Series | Somewhere Our Love Begins | Puchong | 2021-11-24 |
| Series | Who Are You | Korn | 2020-05-02 |
| Series | Woon Ruk Nakkao | Somkhid Narupat | 2020-02-12 |
| Series | Brotherhood x2 | Ekkapol "Ek" | 2020-08-01 |
| Series | The Man Series | Seng | 2019-01-27 |
| Series | My Love from Another Star | Rot | 2019-09-17 |
| Series | Until We Meet Again | Dean's Father | 2019-11-09 |
| Series | My Cinderella Girl | Barami | 2018-04-28 |
| Series | Flower in the Storm | Praween | 2018-06-18 |
| Series | The Prayer | Praphoj Sakdinan | 2018-09-20 |
| Series | In Family We Trust | Prasoet Chira-anan | 2018-09-14 |
| Series | Paen Rai Long Tai Warak | "Phas" Phetpraphas Prakaiphet Na Ayutthaya | 2017-06-01 |
| Series | Padiwarada | Bamrun | 2016-01-13 |
| Series | Miss Shy | Denchat Anothai [Nang's father] | 2016-09-24 |
| Series | Man Dok Ngew | Chonlathep | 2016-06-08 |
| Series | The Heart of Earth | Thawon | 2015-03-15 |
| Series | The Rising Sun | Osamu Mizaki | 2014-07-16 |
| Series | Nai Suan Kwan | Chian | 2014-01-05 |
| Series | Maya See Mook | Khatha | 2013-03-29 |
| Series | Father's Fruit: Tai Rom Bai Puk | Kroekkiat Dechathon | 2013-11-26 |
| Movie | First Kiss | Kriangkrai | 2012-01-25 |
| Series | Fated Heaven Fortune and Earth | Peter | 2012-02-07 |
| Movie | My True Friend | Gun's Dad | 2012-01-19 |
| Series | Raak Boon | Wanan | 2012-11-16 |
| Series | The Voice Thailand | MC Kob | 2012-09-09 |
| Series | Jewel from the Heavens | Thongthiu | 2012-07-23 |
| Movie | Loving You, Loving Me | Khwan’s husband | 2011-05-12 |
| Series | The Trickery of Love Dupes the Heart | Thut | 2011-08-31 |
| Movie | คุณพ่อกระโปรงบาน | Unknown | 2011-12-25 |
| Series | Nuer Mek | Akat | 2010-03-16 |
| Series | Dok Ruk Rim Tang | Winai | 2010-05-10 |
| Series | A Mother's Hand | Danai Udompat [Doctor] | 2009-03-25 |
| Series | Plerng See Roong | Thinit Atsawabodi | 2009-12-19 |
| Series | Leave the Last Light at Horizon | Norakan | 2009-12-23 |
| Series | Heart of Stone | Phira | 2007-05-01 |
| Movie | Love of Siam | Korn | 2007-11-22 |
| Series | When The Sky Changes Color | Unknown | 2005-01-05 |
| Series | Dao Lhong Fah | "Kai" Watcharin Sirawut | 2005-04-28 |
| Movie | Be True | Wachara | 2004-01-30 |
| Movie | Butterfly in Grey | Yingsak | 2002-10-04 |
| Movie | O-Negative | Nid | 1998-10-30 |
| Movie | ความรัก...ไม่มีชื่อ | Unknown | 1990-04-05 |
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