Kathadeb Thaivanit, the Thai director of The Edge of Horizon (2026)

Kathadeb Thaivanit

BIOGRAPHY

Kathadeb Thaivanit (Thai: คฑาเทพ ไทยวานิช), credited in Thai as โอ๋ คฑาเทพ ไทยวานิช, is a Thai television director. One31’s own promotional material for The Edge of Horizon describes him as having directed more than twenty Thai dramas; TMDB currently lists fourteen directing credits for him, the earliest being Nang Rai Sai Lab in 2013.

Most of his listed work sits in the emotional-realism end of Thai television: multiple seasons of the Club Friday anthology, In The Shadow of Success, Way Back to Memories, Krachao Seeda, Desirable Flowers, Fallen Rainbow and Behind the Revenge. He has also written, taking a screenplay credit on Mistress in 2019.

The Edge of Horizon (อรุณรุ่ง, 2026) is his first period BL series. He directed all eleven episodes.

BLGLFlix editorial view

One31 says more than twenty dramas. TMDB lists fourteen. Both numbers are on this page and neither is wrong.

Kathadeb Thaivanit has been directing Thai television since Nang Rai Sai Lab in 2013, across multiple seasons of the Club Friday anthology and through In The Shadow of Success, Way Back to Memories, Krachao Seeda, Desirable Flowers, Fallen Rainbow and Behind the Revenge. He took a screenplay credit on Mistress in 2019.

Directing credits are recorded far worse than acting credits. Databases index the people on screen and pick up directors inconsistently, so a promotional line from a broadcaster and an aggregator’s count routinely disagree by a third. Publishing the gap is more useful than choosing one and looking confident.

The Edge of Horizon in 2026 is his first period BL, and he directed all eleven episodes. Coming to it from Club Friday matters: that anthology built its reputation on relationship stories told without gloss, which is a very different school from the studio-pairing tradition most of this catalogue comes out of.

PROFILE DETAILS

Native Name
คฑาเทพ ไทยวานิช
Real Name
Kathadeb Thaivanit
Nickname
Oh
Pronouns
he/him
Gender
Male
Profession
Nationality
Years Active
2013-present
Languages
Thai

FILMOGRAPHY — TV SERIES (1)

FREQUENTLY ASKED QUESTIONS

Who directed The Edge of Horizon?

Kathadeb Thaivanit directed all eleven episodes of the 2026 One31 period BL series.

How many dramas has he directed?

One31’s promotional material for The Edge of Horizon says more than twenty. TMDB lists fourteen directing credits. Thai lakorn credits are often incomplete in international databases, so the higher figure from the broadcaster is plausible, but BLGLFLIX reports both rather than picking one.

What else has he directed?

Nang Rai Sai Lab (2013), several seasons of Club Friday, The Writers Project: Last Line (2018), Without Affection (2018), Way Back to Memories (2019), In The Shadow of Success (2021), Krachao Seeda (2021), Desirable Flowers (2022), Fallen Rainbow (2022) and Behind the Revenge (2023).

Does he only direct?

Mainly. He took a screenplay credit on the 2019 series Mistress.

Is this his first BL series?

The Edge of Horizon is his first credited BL production and his first period piece in the genre.

Biographical details and any photograph on this page come from TMDB and the sources named in our editorial notes. This product uses the TMDB API but is not endorsed or certified by TMDB. BLGLFLIX is an independent reference site with no affiliation to the person profiled or their agency, and does not publish speculation about anyone’s private life. Full copyright, correction and takedown policy: Disclaimer.

Sources

Every factual claim on this page is taken from the records below. Where two sources disagree, the disagreement is stated in the text rather than resolved silently.

Sources consulted (26 August 2026): The Movie Database (TMDB) person 3242526 for name, credits and profile photograph. One31 official series announcement for the directing credit.

This product uses the TMDB API but is not endorsed or certified by TMDB.

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