World Top 100 Petrochemicals Companies List by Market Cap as of August 2026

Westlake Chemical Corporation is a manufacturer of Chemicals and Petrochemicals company. It provide the building blocks for vital solutions from packaging and healthcare products to automotive and consumer goods to building and construction products. The company products are bread bags, polymer, polyethylene, cheese wrappers to meat containers and milk cartons. The headquarters is in USA.

As on Dec-2022, Westlake Chemical Corporation has 15,920 employees.

PETRONAS Chemicals Group Berhad is chemicals producing company related to chemicals. Headquarters is in Malaysia.

HPCL is Oil and Gas company with headquarters is in Mumbai of India. ONGC own about 51% of shares of HPCL. HPCL today owns and operates two coastal refineries at Mumbai and Visakhapatnam with designed capacity of 7.5 MMTPA and 8.3 MMTPA respectively. Add to this a joint venture refinery at Mangalore, two cross-country pipelines and an extensive network of terminals, depots, bottling plants and aviation servicing facilities.

GS Holdings has businesses in Energy, Retail and Construction Businesses.

It is also gas utilities and electricity utilities company.

It has businesses related to Petrochemicals, Petroleum and lubricants.

It has businesses related to Power generation and has business in renewable energy.

It has business in Retail sector with super markets and convenience stores.

It has business in Media sector, Hotels operating sector, telecom sector, imports and exports services sector, Engineering and Construction sector.

Vopak has tank terminals in key marine locations that are critical to their customers around the world to store Oil, Chemicals and Gases. Vopak stores a wide variety of liquid bulk products and gasses. Headquarters is in Netherlands.