Only 2 of Thailand's 21 Sector Leaders Crack the Top 10, 2026
In short
Only 2 of the 21 companies that lead their own industry section by revenue also rank in Thailand's national top 10, a 9.52 percent overlap as of 17 Jul 2026. Hua Seng Heng Commoditas leads wholesale and retail trade and is the single largest company in the country. PTT Public Company Limited leads manufacturing and ranks second nationally. The other 19 sector leaders, including Bangkok Bank and Thai Airways, sit well below the cutoff.
How many sector leaders crack the national top 10?
Thailand's registry splits companies into 21 lettered industry sections, from agriculture to extraterritorial organizations, and each section has one company that reports more revenue than any other company inside it. Only 2 of those 21 sector leaders also show up on the national top 10 by revenue. That works out to a 9.52 percent overlap, as of 17 Jul 2026 (DBD, 2026). Hua Seng Heng Commoditas, a gold and commodities trading company, leads wholesale and retail trade and is also the single largest company in Thailand by revenue. PTT Public Company Limited leads manufacturing and ranks second nationally. The remaining 19 sector leaders, spanning banking, telecom, aviation, real estate and construction, do not come close to the national top 10 at all.
Sector leaders that also rank nationally
- Also in the national top 109.5%2
- Not in the national top 1090.5%19
Two names repeat across both lists. Nineteen sector leaders never appear on the national top 10 at all.
The eight biggest sector leaders by revenue
- Hua Seng Heng Commoditas, Wholesale and retail trade5,557
- PTT Public Company Limited, Manufacturing1,562
- Bangkok Bank, Financial and insurance203
- Advanced Wireless Network, Information and communication198
- Thai Airways International, Transportation and storage194
- True Move H, Administrative and support162
- PTT Exploration and Production, Mining and quarrying85
- Advanced Info Service, Professional scientific and technical52
Figures in billion baht revenue.
The smaller 13 sector leaders are left off this chart for scale. They range from 50.37 billion baht down to 1.75 million baht and appear in the table below.
All 21 sector leaders, ranked by revenue
| Industry section | Top company by revenue | Revenue (billion baht) | In national top 10 |
|---|---|---|---|
| Wholesale and retail trade | Hua Seng Heng Commoditas Company Limited | 5,557 | Yes, rank 1 |
| Manufacturing | PTT Public Company Limited | 1,562 | Yes, rank 2 |
| Financial and insurance | Bangkok Bank Public Company Limited | 203 | No |
| Information and communication | Advanced Wireless Network Co., Ltd. | 198 | No |
| Transportation and storage | Thai Airways International Public Company Limited | 194 | No |
| Administrative and support | True Move H Universal Communication Co., Ltd. | 162 | No |
| Mining and quarrying | PTT Exploration and Production Public Company Limited | 85 | No |
| Professional, scientific and technical | Advanced Info Service Public Company Limited | 52 | No |
| Construction | Italian Thai Development Public Company Limited | 50 | No |
| Electricity and gas | Gulf SRC Co., Ltd. | 37 | No |
| Real estate | Central Pattana Public Company Limited | 35 | No |
| Agriculture | Cargill Meats (Thailand) Limited | 32 | No |
| Human health and social work | Bangkok Dusit Medical Services Public Company Limited | 31 | No |
| Accommodation and food service | Minor International Public Company Limited | 19 | No |
| Arts and entertainment | Lotteryplus Co., Ltd. | 16 | No |
| Water and waste | Joon Chee Material Technology Co., Ltd. | 6 | No |
| Other services | Fortasia Co., Ltd. | 4 | No |
| Education | Saeng Neern Patanakarn Co., Ltd. | 2 | No |
| Public administration | Dental Corporation Company Limited | 0 | No |
| Extraterritorial organizations | Interpark International (Thailand) Company Limited | 0 | No |
| Households | Lamai Sueakok Limited Partnership | 0 | No |
The highest revenue company in each industry section, as of 17 Jul 2026.
Why this matters
Leading an industry section and leading the country are two different achievements. A company can dominate real estate, telecom or aviation and still sit several tiers below Thailand's largest firms nationally. PTT and Hua Seng Heng Commoditas are the exception, not the rule. PTT sits inside the country's energy and petrochemical complex, and Hua Seng Heng trades gold and other commodities at a scale that outruns a national oil company. Everyone else, including Bangkok Bank, Advanced Info Service and Central Pattana, tops its own section but reports a small fraction of what sits at the very top of the national ranking. Bangkok Bank, the third largest sector leader, holds only 42.82 percent of the revenue posted by CP All, the smallest company on the national top 10. Corporate revenue in Thailand already concentrates inside a handful of large groups, and this comparison shows that concentration runs deeper than any single sector (OECD, 2025). A sector's biggest name rarely tells you where the country's biggest money actually sits.
Definitions
- Sector leader
- The single company with the highest reported revenue inside one of the 21 lettered TSIC industry sections.
- National top 10
- The ten companies with the highest reported revenue across every sector in Thailand.
- Overlap rate
- The share of the 21 sector leaders that also appear in the national top 10, expressed as a percentage.
- TSIC section
- A one letter code, A through U, that groups Thai registered companies into 21 broad industries under the Thailand Standard Industrial Classification.
- Revenue
- Total reported revenue taken from a company's most recent filed financial statement in the DBD registry.
Assumptions
- Rankings include only companies with a filed financial statement, so an unlisted or non-filing giant would not appear in either list.
- PTT Exploration and Production Public Company Limited, the mining sector leader, is a distinct legal entity from PTT Public Company Limited, the manufacturing sector leader and national rank 2. Shared branding does not mean shared revenue.
- The national top 10 table was computed 24 Jun 2026, three weeks before the section leader table, so any rank change in that window would not surface as a discrepancy here.
- Gold and commodity trading revenue can include the full value of metal bought and resold, so it is not directly comparable to a manufacturer's or a bank's revenue.
Methodology
Sector leaders come from market_section_insight, which records the single highest revenue company inside each of the 21 lettered TSIC industry sections in the DBD registry, as of 17 Jul 2026. The national top 10 comes from market_trends_insight, ranked by total revenue among companies with a filed financial statement, computed 24 Jun 2026. A company counts as overlapping only when its name matches exactly between the two tables. Revenue figures come only from filed financial statements, so a company that has not filed recently will not appear in either ranking even if it operates at scale.
How we verified this
- 2 divided by 21 recomputes to 9.52 percent, matching the headline overlap rate.
- Each of the 21 top_company_name values from market_section_insight was compared by exact string match against the 10 company_name values in market_trends_insight for the revenue metric. Only Hua Seng Heng Commoditas Company Limited and PTT Public Company Limited matched, confirming the count of 2.
- Bangkok Bank's revenue of 202,549,954,000 baht divided by CP All's revenue of 473,009,380,740 baht recomputes to 42.82 percent, confirming Bangkok Bank holds under half of the smallest national top10 company's revenue.
- The section count of 21 was confirmed by counting the distinct section_code values returned from market_section_insight, matching the 21 TSIC sections defined in the data guide.
References
- Department of Business Development. (2026). Registered juristic persons and financial statement aggregates. Ministry of Commerce, Thailand. https://www.dbd.go.th/
- OECD. (2025). The corporate sector. In OECD capital market review of Thailand 2025. OECD Publishing. https://www.oecd.org/en/publications/oecd-capital-market-review-of-thailand-2025_0a975590-en/full-report/the-corporate-sector_008c96e5.html
Frequently asked questions
How many of Thailand's sector-leading companies also rank in the national top 10 by revenue?
Only 2 of the 21 companies that lead their own industry section also appear in the national top 10 by revenue, a 9.52 percent overlap, as of 17 Jul 2026.
Which two companies lead both their sector and the nation?
Hua Seng Heng Commoditas leads wholesale and retail trade and ranks first nationally. PTT Public Company Limited leads manufacturing and ranks second nationally.
Why do most sector leaders miss the national top 10?
Most sector leaders operate at a far smaller revenue scale than the handful of firms at the very top. Bangkok Bank, the third largest sector leader, reports only 42.82 percent of the revenue posted by CP All, the smallest company on the national top 10.
Cite this page
Chatpong L. (2026). Only 2 of Thailand's 21 Sector Leaders Crack the Top 10, 2026. Max Data Insights. https://maxdatathailand.com/insights/only-2-of-thailands-sector-leaders-crack-the-national-top-10-2026
Data & corrections
Download the data (CSV)Spot something off, or want to ask about the data? Email insights@maxsolutions.co.th. We publish corrections.
Written by
Chatpong L.Founder, Max Data, Max Solutions Co., Ltd.
Chatpong L. leads Max Data, a company-intelligence platform built on Thailand's official business registry. He writes about the structure of the Thai economy using primary registry data. His work covers company formation, industry concentration, and regional business activity.
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This page reports company-level and aggregate statistics only. It names no individuals and makes no claims about any person. Figures are provided for information and may be revised as source data updates.