In 2018, at the age of 19, Thanawat was signed as an artist under the production and talent agency
GMMTV after a casting manager saw his photos on social media and asked him to audition for the company. Shortly after, he made his acting television debut as a supporting character in the series ''
'Cause You're My Boy. He followed this by supporting roles in The Charming Step Mom,
and 2gether''. In 2021, Thanawat played Longtae, the village chief's son, in
A Tale of Thousand Stars. in which he also starred in a main role as Paul, a closeted 55-year-old man who wakes up in the body of his 15-year-old self. The Eclipse won Best BL Series at the Thai Digital Awards 2022 and the Bronze Award for Best LGBTQ+ Programme Made in Asia at the Content Asia Awards 2023. He also earned an
Asia Television Awards nomination for Best Theme Song for "Over The Moon (คลาด)" which Khaotung provided lead vocals
. The two would later reprise their roles as Akk and Ayan in the 2023 anthology series
Our Skyy 2. as well as a nomination for Best Actor in A Supporting Role at the
Asia Television Awards. Later in the year, he worked again with
Only Friends director Tichakorn Phukhaotong and on-screen partner Kanaphan Puitrakul (First), playing an assassin in
The Heart Killers. ==Filmography==