"Third" Lapat Ngamchaweng is a Thai singer and actor under GMMTV (จีเอ็มเอ็มทีวี) He sometimes performs as a member of the boy group TRINITY (ทรินิตี้), although they officially disbanded after their label 4NOLOGUE (โฟร์โนล็อค) ended all contracts on February 29, 2024.
Born in Bangkok, Thailand, he attended New Sathorn International School before graduating from the international program at Chulalongkorn University's Faculty of Communication Arts in 2020.
He first entered the entertainment industry when appeared in a 2012 adaptation of Romeo and Juliet, playing the child lead actor. Signed with Kamikaze (กามิกาเซ่) early in his career, he released his debut single "Reminder" (ที่ระทึก) as Third Kamikaze on 27 August, 2014. With 368 million views as of July 2026, the music video is the label's most-watched on YouTube. He was under Kamikaze until November 2017. He then signed under 4NOLOGUE in 2018, becoming a member of the project boy group 9x9 (Nine by Nine; ไนน์บายนาย). As part of the project, he starred in two TV series entitled "In Family We Trust" (เลือดข้นคนจาง) and "Great Men Academy" (Great Men Academy สุภาพบุรุษสุดที่เลิฟ). After the project ended, he debuted as a member of the smaller group TRINITY with three other former members in September of 2019. After leaving 4NOLOGUE's management in 2024, Third established his own independent management and entertainment company, T3 Group Entertainment (ทีทรี กรุ๊ป เอ็นเตอร์เทนเมนท์).
In 2019, Third won Best Team Ensemble in the 10th Nataraj Awards, Top Talk-About Artist in the MThai Top Talk-About 2019 Awards, and Rising Star in the Kazz Awards 2019. In 2020, he won Trending Artist in Kazz Awards 2020. In 2021, he won Moral Creation Media Award for Movies in the 2020 Moral Media Awards, Youth Favorite Artist - Group in the 2020-2021 Thailand Master Youth Awards, and Best Ensemble Cast in the 2nd White TV Awards.
