Thanaphum Sestasittikul (Thai: ธนภูมิ เศรษฐสิทธิกุล; born 8 March 2002), nicknamed Auau (Thai: อู่อู๋), is a Thai actor and singer under Domundi TV. He is a member of the T-pop group DEXX. He is known for his roles in Your Sky (2024), Your Sky of Us (2025), and Mr. Fanboy (2026).
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Biography
Thanaphum was born in Thailand. He graduated from high school at Saint Gabriel's College. Subsequently, he earned a bachelor's degree in Communication Arts from Silpakorn University.
Career
In 2021, he participated in the talent show Laz Icon on One 31. Later, he became a member of the boy group DVI under 4nologue. DVI disbanded after 4nologue announced the decision to terminate the contracts of all members on 29 February 2024.
After leaving 4nologue, he joined the fourth generation of Domundi TV by participating in the reality show DMD Friendship the Reality, It Takes Two.
In July 2024, he attended the blessing ceremony for the BL series Your Sky. The series premiered in November 2024, with Thanaphum playing the role of Real, forming an on-screen pair with Worapong Walor (Save).
In June 2025, he debuted as a member of the new boy group DEXX under Domundi TV with the release of the single "Clang Clang". In 2025, he was announced as the lead of the series Mr. Fanboy alongside Worapong Walor (Save). Also in 2025, Auau was featured on the cover of Kazz Magazine together with Save, Teetut Chungmanirat (Thomas) and Kongpob Jirojmontri (Kong) for the magazine's 19th anniversary edition. In 2026, he appears in the series ChermChey.
