Family and education Metawin was born in
Bangkok,
Thailand, and is the third of four siblings. He has two older sisters, Mintra and Mesa, and a younger brother, Metas. He started his studies at Denla British School (DBS), and went to
Assumption College, a private Catholic boys school in Bangkok for his primary education. He had a brief summer course at
Assumption College Bangrak. He then went to Panyarat High School for secondary education. In 2014, he joined an English summer program in the
UK. In March and April 2015, he participated in a 42-day summer program in
Taiwan to study
Mandarin. He studied as an exchange student at
Belmond–Klemme Community School District in
Iowa,
USA for a year, and passed the
General Education Development (GED) exam in 11th grade. He graduated in 2020, with his graduation ceremony delayed until 27 May 2022, due to the
COVID-19 pandemic. During his time as an exchange student Metawin actively participated in his school's extracurricular activities, he became a member of the school band's percussion choir where his group received a superior (Division I) rating. He played
American football and was part of his high school's soccer team. He used to play golf competitively during his childhood and won several tournaments but had to quit due to injury. He still continue playing golf recreationally. He is fluent in Thai and English and can hold a basic conversation in Mandarin. In July 2024, Bentley died due to lymphoma.
Business ventures Win Metawin began his first business venture at the age of 18 while enrolled as a freshman in the International Economics program at Thammasat University. He launched an event organizing business, starting with the coordination of a small concert. His responsibilities encompassed overseeing logistics, event planning, vendor coordination, and operational management. In June 2020, during his fourth year of university and at the start of his career in the entertainment industry, Metawin launched his fashion brand, Velence, sold primarily through an online platform. The brand serves both domestic and international markets, with exports to 15-16 countries. It offers a range of products, including clothing, accessories, hats, bags, and more. On 9 September 2021, he launched Velato, a premium ice cream brand. The brand later merged, with the product now being sold in Souri stores as the brand begun opening several physical locations across Bangkok. Before the end of 2024, Souri had over 150 employees and offered 120-130 types of products. Metawin revealed that sales of macarons alone had surpassed 200,000 pieces per month, with prices ranging from 90 to 120 baht per piece. This translates to an estimated 25 million baht in sales per month, or approximately 300 million baht annually. and in the same year, Metawin, as the co-founder, received the "New Generation Award" at the HOWE Awards 2024 in recognition of his entrepreneurial achievements. As of 12 September 2024, Metawin holds shares in seven companies. Besides his investments, he also serves as a director in nine companies. In December 2024, he launched another dessert shop, Cosie, with chiffon cake as its primary product, which he developed with his sister, Mesa Opas-iamkajorn. As of 12 March 2025, Metawin is one of the major shareholders of The One Enterprise Public Company Limited (ONEE), a leading media and entertainment company in Thailand. Its business spans across advertising, copyrights and licensing, radio, artist management, concert and event organization, merchandising, production services, and studio rentals. ONEE is the parent company of several well-known subsidiaries, This includes
GMMTV, the agency Metawin is currently signed with,
GMM25, GMMTV Shop, GMM Media,
ONE31, ONE D, and many more. He won the "Outstanding New Generation Entrepreneur" award at the Grab Thumbs Up Awards 2025, held on March 26, 2025.
Humanitarian works In July 2020, Metawin participated in
The Sound of Happiness campaign, an initiative organized by
UNICEF Thailand in collaboration with the Department of Mental Health and
JOOX. The campaign aimed to promote mental health awareness among young people in Thailand. Metawin was one of twelve public figures who volunteered to share personal stories about their emotional challenges and experiences with stress during adolescence, encouraging youth to prioritize mental well-being and seek help when needed. In early 2024, Metawin Opas-iamkajorn took part in the
Humans Against Dengue campaign, a regional initiative promoting
dengue prevention across Southeast Asia. He appeared in public service announcements encouraging communities to adopt proactive health measures, including early diagnosis, vector control, and vaccination. The campaign was part of a broader effort under the
United Against Dengue coalition, launched by
IFRC Asia Pacific in collaboration with
Takeda Pharmaceutical Company and various public health agencies. Under the slogan "The Less You Know About Dengue, The More Protection You Need," Metawin was featured as one of the campaign’s “Dengue Heroes,” using his public platform to raise awareness and support dengue prevention efforts across the region. In September 2024, Metawin participated in the tenth edition of the
Miracle Is All Around seminar, also known as
Miracle X, organized by the Lymphoma Society of Thailand to mark World Lymphoma Day (15 September). Held at Eden Zone, CentralWorld, the event featured expert presentations on innovative lymphoma therapies such as targeted therapy, bispecific antibodies, and CAR‑T cell immunotherapy, offering new treatment hope to patients unable to undergo stem cell transplantation. Metawin joined former lymphoma patients, known as the “X Fighters,” along with artists and healthcare professionals, in motivational activities intended to uplift current patients and reinforce community solidarity in the fight against lymphoma. In June 2025, Metawin Opas-iamkajorn was appointed as a celebrity supporter for
UNHCR Thailand. He participated in the World Refugee Day event held on 20 June in Bangkok, where he helped launch the
Hope Away from Home campaign. As part of his role, he appeared in official UNHCR content encouraging public support for displaced people. He stated that his next step would be to visit refugee communities in the field within Thailand, with the aim of helping the public better understand the situation and how they can contribute. His activities with UNHCR include attending advocacy events, promoting refugee rights through media channels, and supporting efforts to raise awareness and resources for humanitarian work. That same year, Metawin also supported the
Thai Red Cross Society’s national blood donation
BLOOD CONNECT campaign. He used his platform to promote blood donation, particularly among younger audiences, in response to ongoing national shortages. Through social media and public messaging, he encouraged regular participation in blood donation efforts to help maintain the country's emergency medical supply. == Career and influence ==