Top 10 Largest Companies in Thailand

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Thailand is a developing country with the second-best economic performance in Southeast Asia. Thailand's large corporations measure the country's overall ... read more...

  1. Top 1

    Airports of Thailand

    Airports of Thailand Public Company Limited (AOT) is a Thai government-owned corporation. This is also the largest company in Thailand by market capitalization. It oversees Thailand's six international airports and plans to add four more in 2019. It was named the world's most valuable airport operator in 2018. The Department of Airports, a distinct body, manages Thailand's 28 regional airports. The Airports Authority of Thailand (AOT) was founded on September 20, 2002, as a result of the privatization of the state-owned Airports Authority of Thailand (AAT). The corporation was worth 14,285,700,000 baht at the time.


    Airports of Thailand primary businesses are airport management, hotel management, ground aviation services, security, and a perishable products project. Suvarnabhumi Airport (BKK), Don Mueang Airport (DMK), and four regional international airports, including Chiang Mai (CNX), Hat Yai (HDY), Phuket (HKT), and Mae Fah Luang - Chiang Rai (CEI), are all operated by the company. The operations of the company include both aeronautical and non-aeronautical activity. Its aviation activities include landing and parking charges, departing passenger service charges, and aircraft service charges. Office and state property leases, service revenues, and concession earnings are among its non-aeronautical businesses.


    Airports of Thailand operates with social responsibility and sustainable development in mind, adhering to the notion of "being an airport that is a good citizen of society and a good neighbor of the community," also known as Corporate Citizenship Airport. AOT seeks to foster sustainable growth from within by conducting business responsibly, establishing a balance of values in the economy, society, and environment, and strengthening connections and building trust with stakeholders both at home and abroad.


    Founded: 2002
    Headquarters: Don Mueang, Bangkok, Thailand
    Website: https://investor.airportthai.co.th/

    Screenshot of https://investor.airportthai.co.th/
    Screenshot of https://investor.airportthai.co.th/
    AOT Official

  2. Top 2

    PTT PCL

    PTT Public Company Limited, or simply PTT, is a Thai state-owned oil and gas company that is publicly traded on the SET. It possesses substantial underwater gas pipes in the Gulf of Thailand, as well as a network of LPG terminals across the country, and it is involved in electricity generation, petrochemical goods, oil and gas exploration and production, and gasoline retailing. Café Amazon, a popular coffee franchise in South East Asia, is also owned by the firm, with sites near PTT gas stations or within malls.


    PTT is the largest corporation in the country and the only Thai company on the Fortune Global 500 list. The company is ranked 81st on the Fortune 500 and 180th on the Forbes 2000. PTT was established as a state-owned corporation in 1978 (as the Petroleum Authority of Thailand) by Prime Minister Kriangsak Chamanan's cabinet. It was founded via the merger of the Thai Fuel Organization under the Defense Energy Department and the Thai Natural Gas Organization under the Ministry of Industry.


    PTT's aim is to conduct integrated energy and petrochemical operations as the country's energy firm, with the goal of responding equally to all stakeholders. PTT is committed to assuring customer happiness and loyalty by providing high-quality products and services at reasonable costs. Under corporate governance and transparent information sharing, PTT values business conduct that is sustainable, attentive to social well-being, and environmentally responsible. It is steadfast in its commitment to innovation and technical advancement. As a result, PTT has received numerous honors, rankings, and certification all around the world.


    Founded: 1978
    Headquarters: Bangkok, Thailand
    Website: https://www.pttplc.com/

    Screenshot of https://www.pttplc.com/
    Screenshot of https://www.pttplc.com/
    PTT Public Company Limited
  3. Next one in the list of largest companies in Thailand by market capitalization is PTT Exploration and Production. PTT Exploration and Production Public business Limited, or PTTEP, is a Thai national petroleum exploration and production business. It is a subsidiary of PTT Public Company Limited, a state-owned corporation. The firm was established on June 20, 1985. PTTEP's primary activity is petroleum exploration and production in Thailand and other countries. PTTEP Group had 40 petroleum exploration and production projects in 11 countries as of June 30, 2018: 16 in Thailand, 15 in Southeast Asia, 5 in the Americas, 3 in Africa, and 1 in Australia.


    PTTEP has invested in large petroleum exploration and production projects in Southeast Asia, the Middle East, North Africa, Australasia, and North America for over 30 years. Furthermore, PTT Exploration and Production has introduced unconventional E&P business into the company's operations, such as Floating Liquefied Natural Gas Production: FLNG, investment in Oil Sands fields, and the development of new strategies and technologies to increase the volume of production and petroleum reserves, as well as the company's and Thailand's long-term strength.


    PTT Exploration and Production operates with the spirit and drive to develop the correct balance of business, social, and environmental factors, as well as shared values for stakeholders, with the goal of achieving sustainable growth. As a result, PTTEP contributes to greenhouse gas management and the resolution of global warming challenges. PTTEP will seek the development of technology to reduce greenhouse gas emissions from the manufacturing process, specifically carbon capture and storage, which will significantly cut greenhouse gas emissions. The captured emissions will be pumped and sequestered in reservoirs in the Gulf of Thailand and Malaysia, making it Thailand's first of its sort.


    Founded: 1985
    Headquarters: Bangkok, Thailand
    Website: https://www.pttep.com/

    Screenshot of https://www.pttep.com/
    Screenshot of https://www.pttep.com/
    Corporate Governance Asia
  4. Top 4

    Advanced Info Service (AIS)

    The largest GSM mobile phone operator in Thailand is Advanced Info Service Public Company Limited (AIS). AIS was founded in April 1985 as a computer rental company. It debuted analog 900 MHz mobile phone services in October 1990, with a 20-year monopoly license from the Telephone Organization of Thailand (TOT), and was later the first business to operate on the GSM-900 frequency. In June 1992, it purchased Shinawatra Paging. With 40.1 million users as of August 2019, AIS is Thailand's largest network. Besides post-paid services, AIS also provides prepaid services under the 1-2-Call brand.


    Cellular telephone system network, call center services, electronic cash card, mobile financial services, and insurance services are among the services offered by the organization. Advanced Info Service sells and markets mobile phones, SIM cards, tablets, refill cards, smart accessories, and cash cards. It provides mobile payment services using an electronic cash card, as well as network and computer system services. In addition, the company provides international direct dialing services, business process outsourcing, and data communications services such as Internet and international and national Internet gateways, cloud computing, and managed security services. It provides services through a variety of platforms, including VDO Platform, Business Cloud, Mobile Money, and the Internet of Things.


    Advanced Info Service is ready to power Thailand with 5G technology, which is currently available in 77 provinces via three core businesses: mobile phones, high-speed home broadband via AIS Fibre, and Digital Services in five areas: video, the Cloud, digital payments, the Internet of Things (IoT), and services provided in collaboration with partners. AIS eSports and AIS Insurance Service are also being developed by the corporation. All of this is to go forward with the vision of becoming a Cognitive Tech-Co, to support the country's solid digital infrastructure, raise the industrial sector's competitive potential, and improve the quality of life for all Thais.


    Founded: 1986
    Headquarters: Phaya Thai, Bangkok, Thailand

    Website: https://investor.ais.co.th/

    Screenshot of https://investor.ais.co.th/
    Screenshot of https://investor.ais.co.th/
    AIS
  5. Top 5

    CP All

    Ranked fifth in the list of largest companies in Thailand by market capitalization is CP All. The Charoen Pokphand Group created CP All Public Company Limited in 1988 to operate convenience store businesses in Thailand under the 7-Eleven logo. 7-Eleven, Inc., USA awarded the corporation a license to use the brand. The first 7-Eleven store in Thailand opened on Patpong Road in 1989. Charoen Pokphand Foods (CPF), one of the world's major producers of feed, shrimp, chicken, and pig, is also owned by CP All Plc.


    CP All also purchased Siam Makro Public Company Limited (''Makro'') in 2013, which operates membership-based Cash and Carry commerce facilities in Thailand. Makro then invested in Lotus' Asia business (C.P.Retail Development Co.,Ltd and its subsidiaries) on October 25, 2021. The Lotus Group is a grocery and consumer goods retailer with multi-store formats including discount store, supercenter, and hypermarket, as well as a leasing business in shopping malls and other services in Thailand and Malaysia. This investment will help Makro become one of Southeast Asia's leading regional retailers and wholesalers of fresh food and consumer goods, as well as broaden the breadth of business activities to compete in both offline and online channels.


    CP All recognizes the importance of a holistic transformation agenda that prioritizes fairness and sustainability. CP All seeks to improve people's lives by creating economic, social, and environmental value for long-term growth. Through business activities and stakeholder interaction, CP All displays social responsibility in order to produce reciprocal advantages for their firm, local communities, and society as a whole. By blending commercial success with responsibility, this mirrors the United Nations SDGs of enhancing people's quality of life and conserving the environment.


    Founded: 1988
    Headquarters: Bangkok, Thailand
    Website: https://www.cpall.co.th/

    Screenshot of https://www.cpall.co.th/
    Screenshot of https://www.cpall.co.th/
    Photo by CP All
    Photo by CP All
  6. Bangkok Dusit Medical Services is the largest private healthcare group in Thailand. Prasert Prasarttong-Osoth, a Thai millionaire, started it. The group includes six hospitals with 34 hospital branches: Bangkok Hospital (17 branches), BNH Hospital, Phyathai Hospitals (5 branches), Paolo Memorial Hospitals (5 branches), Samitivej Hospital (5 branches), and Royal Bangkok Hospital (17 branches).


    Bangkok Dusit Medical Services (BDMS) is one of Asia-Pacific's most famous hospital networks. BDMS provides world-class medical care to about 2 million international patients each year, supported by cutting-edge medical technology and more than 12,000 skilled doctors with advanced training from leading medical schools worldwide. The quality of our services is driven by the cooperation with major academic medical centers in the United States, Western Europe, and Japan. BDMS mission is to provide patients with world-class treatment from the moment they arrive until they leave.


    Bangkok Dusit Medical Services Public Company Limited (BDMS) has been committed to providing high-quality medical care while adhering to moral ideals in order to serve patients of all races, faiths, and ages. Together with clinical quality assurance programs, clinical ethics and moral determinants of health have always been an important component of developing doctors' and medical personnel's professional knowledge and skills throughout the last 50 years. Their mission is to become an Asia Pacific medical hub, progressing toward smart healthcare by combining sophisticated technology and integrated clinical care with Thai hospitality to achieve outstanding patient experiences.


    Founded: 1969
    Headquarters: Bangkok, Thailand
    Website: https://www.bdms.co.th/

    Screenshot of https://www.bdms.co.th/
    Screenshot of https://www.bdms.co.th/
    Bangkok Hospital
  7. Top 7

    Thai Beverage

    Thai Beverage (ThaiBev) is Thailand's largest and one of Southeast Asia's largest beverage firms, with distilleries in Thailand, the United Kingdom, and China. It is also one of the largest companies in Thailand by market capitalization. Charoen Sirivadhanabhakdi, a Thai Chinese wealthy business entrepreneur, owns it. Thai Beverage plc, which is listed on the Singapore Stock Exchange, has a market valuation of more than US$13 billion. In 2004, the company announced that it had completed a US$11.2 billion transaction to acquire the conglomerate Fraser and Neave, adding to the group's asset holdings.


    Thai Beverage Public Company Limited owns and distributes a number of well-known brands, including Chang beer, Mekhong beer, and SangSom rum. It has a considerable presence in Europe, with five distilleries in Scotland producing malt Scotch whiskey, vodka, gin, and liqueurs. Chang Beer, which began production in March 1995 in a brewery in the Bang Ban District of Ayutthaya Province, is Thailand's best-selling brand. After a tough market battle with the previous dominant brand, Singha, it was able to capture 60% of the Thai market. According to research firm Canadean, the company's beer market share was 49 percent in 2006.


    Thai Beverage is the first Asian firm to be named a beverage sector sustainability leader for the third time in a row. This outstanding performance demonstrates ThaiBev's dedication to long-term development. ThaiBev prioritizes environmental issues because environmental conditions affect communities and people's quality of life, which in turn affects the company's activities. Communities, society as a whole, and enterprises can thrive if the environment is effectively managed. As a result, the environment, communities, and civilization must coexist and support one another.


    Founded: 2003
    Headquarters: Bangkok, Thailand
    Website: https://www.thaibev.com/

    Screenshot of https://www.thaibev.com/
    Screenshot of https://www.thaibev.com/
    Photo by www.thaibev.com
    Photo by www.thaibev.com
  8. Top 8

    Siam Makro

    Siam Makro Public Co. Ltd. operates a cash and carry wholesale business under the Makro brand. It sells, imports, and exports food and non-food products such as consumer and electric goods, consumption goods, and fresh and frozen commodities. It works in three divisions: Cash & Carry, Food Services, and Other. Makro has consistently expanded our branches to provide a diverse range of products to our professional members and business operators across the country, including retailers, restaurants, catering businesses, service business operators, government agencies, educational institutions, and other business operators.


    Siam Makro's vision is to effect change in order to make life more fulfilling via excellent health, love, joy, and well-being. They are dedicated to becoming a reliable partner for our professional clients. Makro has been committed for over 30 years to developing its business, products, and services to meet the needs of its customers, as well as expanding the business in its home market of Thailand as well as abroad through various formats and sales channels to create and maintain its competitive advantage.


    Siam Makro also provides services to small and medium-sized businesses, retailers, caterers, service providers, the professional sector, and institutional clients. The company has a presence in the Middle East and Asia Pacific. "To become the number one B2B and B2C retailer in Asia, combining both online and offline platforms, by meeting our customers' daily needs with technology, innovation, and operational excellence, in collaboration with individuals and partners in a sustainable manner."


    Founded: 1988
    Headquarters: Bangkok, Thailand
    Website: https://www.siammakro.co.th/

    Screenshot of https://www.siammakro.co.th/
    Screenshot of https://www.siammakro.co.th/
    Infosys
  9. Top 9

    Siam Cement

    The Siam Cement Public firm Limited is Thailand's and Southeast Asia's largest and oldest cement and building material firm as well as one of the largest companies in Thailand by market capitalization. Forbes ranked SCG as the second largest company in Thailand and the 604th largest public company in the world in 2016. The firm is a SET50 and SETHD-listed industry benchmark. King Vajiralongkorn is the company's largest shareholder, owning 30% of Siam Cement. The products are sold in the United States and exported to all parts of the world.


    Siam Cement is a leading ASEAN business conglomerate that has maintained stable growth well into its 109th year, owing to its business resilience and technology leveraging, allowing the Company to drive the development of innovative products, services, and solutions to meet the diverse application needs of consumers and rapidly changing market conditions, as well as deal with crisis situations quickly. SCG now consists of three primary business units: cement and building materials, chemicals, and SCGP (packaging).


    Siam Cement was the first organization in ASEAN to be included in the prestigious Dow Jones Sustainability Indices (DJSI), a sustainability index used to evaluate leading companies in sustainable business operations since 2004. This was due to SCG's unwavering commitment to creating value for all stakeholders in accordance with the sustainable development approach. For the 18th consecutive year, SCG has been evaluated as a global sustainable company in the DJSI World and DJSI Emerging Markets in Construction Materials Industry, demonstrating its sustainable development accomplishments to achieve a balance in economic, social, and environmental growth in line with its promise: "Passion for Better."


    Founded: 1913
    Headquarters: Bangkok, Thailand
    Website: https://www.scg.com/

    Screenshot of https://www.scg.com/
    Screenshot of https://www.scg.com/
    SCG International Corporation
  10. Top 10

    Siam Commercial Bank (SCB)

    Siam Commercial Bank was created as the first Thai bank by royal charter on January 30, 1907. The Bank has played a significant role in delivering the financial services required in Thailand over its more than 110-year history, accumulating substantial knowledge. SCB is now a prominent universal bank, providing deposits, lending, and a variety of other products and services to fulfill the needs of all consumers. Home loans, personal credit, vehicle rental purchases, credit cards, ATM cards, debit cards, foreign exchange facilities, and overseas remittances are among its retail offerings, as are investment and insurance goods.


    Siam Commercial Bank provides cash management services, lending products, international trade financing, treasury products, debt and capital market products, corporate advice, investment banking, and other services to corporate and SME customers. Their wide banking network and ongoing pursuit of technical innovation support SCB services. Furthermore, the SCB Group of the Bank has three important companies that offer specialized financial services: SCB Securities, SCB Asset Management, and SCB Life Assurance.


    Under the objective of becoming "The Most Admired Bank," Siam Commercial Bank has devised a strategy plan called SCB Transformation, which aims to drastically update the Bank's infrastructure and boost its long-term competitiveness. This revolutionary plan is in response to the financial services industry's rapid change, which is being molded by digital technology, regulatory change, and changing consumer behavior. Following the "Going Upside Down" strategy of this strategic plan, the Bank will revolutionize its business model and thinking across its human resources, work processes, products, and technology, enabling breakthrough performance and producing long-term value for our customers and society.


    Founded: 1904
    Headquarters: Chatuchak, Bangkok, Thailand
    Website: https://www.scb.co.th/

    Screenshot of https://www.scb.co.th/
    Screenshot of https://www.scb.co.th/
    SCB Thailand



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