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Private company

Thai Oil

Logo: Thai Oil, Public domain, via Wikimedia Commons3

Thai public company

Thai Oil Public Company Limited or simply Thaioil (Thai: ไทยออยล์) is a Thai public company. It is listed on the Stock Exchange of Thailand (SET). It is a subsidiary of PTT Group.2 It is part of PTT Public Company Limited.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1961Founded1
  • Industrypetroleum industry1
  • HeadquartersBangkok1
  • Websitewww.thaioilgroup.com
  • Legal formpublic limited company1
  • Listed onOTC Markets Group (TOIPF), Stock Exchange of Thailand (TOP)1

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Thai Oil Public Company Limited or simply Thaioil (Thai: ไทยออยล์) is a Thai public company. It is listed on the Stock Exchange of Thailand (SET). It is a subsidiary of PTT Group. The company was founded on 3 August 1961 as Oil Refinery, Ltd.2

Corporate structure

Thai Oil is part of a group headed by PTT Public Company Limited. 20 entities, 5 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • PTT Public Company Limited Bangkok, Thailand
    • PTT Global Chemical Public Company Limited กรุงเทพฯ, Thailand
    • Thai Oil Bangkok
    • Bangchak Petroleum Public Company Limited Subsidiary · Chatuchak
    • IRPC Public Company Limited Subsidiary · ระยอง, Thailand
    • NatureWorks Subsidiary · Wilmington, Delaware, United States
    • PTT Aromatics and Refining Public Company Limited Subsidiary
    • PTT Chemical Public Company Limited Subsidiary
    • PTT Exploration and Production Public Company Limited Subsidiary · กรุงเทพฯ, Thailand
      • Partex Subsidiary · Lisbon
      • AI and Robotics Ventures Company Limited (บริษัท เอไอ แอนด์ โรโบติกส์ เวนเจอร์ส จำกัด) Subsidiary · Bangkok, Thailand
      • PTTEP Siam Limited (บริษัท ปตท.สผ.สยาม จำกัด) Subsidiary · กรุงเทมหานคร, Thailand
      • PTTEP Treasury Center Company Limited (บริษัท ปตท.สผ. ศูนย์บริหารเงิน จำกัด) Subsidiary · กรุงเทพฯ, Thailand
    • Global Power Synergy Stake · 42.53%
    • PTT INTERNATIONAL TRADING USA INC. Subsidiary · 100% · Wilmington, Delaware, United States
    • ALLNEX RESINS INDIA PRIVATE LIMITED Subsidiary · Mumbai, India
    • PTT INTERNATIONAL TRADING LONDON LTD Subsidiary · London, United Kingdom
    • PTT LNG Company Limited Subsidiary · Thailand
    • PTT OIL AND RETAIL BUSINESS PUBLIC COMPANY LIMITED (บริษัท ปตท. น้ำมันและการค้าปลีก จำกัด (มหาชน)) Subsidiary · กรุงเทพมหานคร, Thailand
    • PTT TREASURY CENTER COMPANY LIMITED (บริษัท ปตท. ศูนย์บริหารเงิน จำกัด) Subsidiary · กรุงเทพฯ, Thailand

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

What it owns

What Thai Oil reports owning in its annual reports to the SEC: buildings, land and equipment, real estate and locations, investments, intangible assets and inventory, at the end of its latest fiscal year and a year before.

Stakes and holdings (Wikidata)

Things Wikidata records the company as owning, with the share when stated.1

Subsidiaries and ownership

Parent company

Also owns

From Wikidata.1

Timeline

  1. Oct 26, 2004Went public Listed on Stock Exchange of Thailand1
  2. 1961Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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  2. 2
  3. 3