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# Companies in Houston, TX

Pick an industry to see the bigger companies headquartered in Houston, TX, what they do and how big they are.

By Enrich.chat Editorial. Updated October 22, 2026.

## Industries in Houston

- [Oil and Gas Companies in Houston](https://enrich.chat/companies-in/houston-tx/oil-and-gas/): Oil and Gas
- [Construction Companies in Houston](https://enrich.chat/companies-in/houston-tx/construction/): Construction
- [IT Services Companies in Houston](https://enrich.chat/companies-in/houston-tx/it-services-and-it-consulting/): IT Services and IT Consulting
- [Real Estate Companies in Houston](https://enrich.chat/companies-in/houston-tx/real-estate/): Real Estate
- [Hospitals and Health Care Organizations in Houston](https://enrich.chat/companies-in/houston-tx/hospitals-and-health-care/): Hospitals and Health Care
- [Software Companies in Houston](https://enrich.chat/companies-in/houston-tx/software-development/): Software Development
- [Consulting Firms in Houston](https://enrich.chat/companies-in/houston-tx/business-consulting-and-services/): Business Consulting and Services
- [Financial Services Companies in Houston](https://enrich.chat/companies-in/houston-tx/financial-services/): Financial Services
- [Advertising Agencies in Houston](https://enrich.chat/companies-in/houston-tx/advertising-services/): Advertising Services
- [Staffing and Recruiting Firms in Houston](https://enrich.chat/companies-in/houston-tx/staffing-and-recruiting/): Staffing and Recruiting
- [Nonprofit Organizations in Houston](https://enrich.chat/companies-in/houston-tx/non-profit-organizations/): Non-profit Organizations
- [Logistics and Supply Chain Companies in Houston](https://enrich.chat/companies-in/houston-tx/transportation-logistics-supply-chain-and-storage/): Transportation; Logistics; Supply Chain and Storage
- [Law Firms in Houston](https://enrich.chat/companies-in/houston-tx/law-practice/): Law Practice
- [Insurance Companies in Houston](https://enrich.chat/companies-in/houston-tx/insurance/): Insurance
- [Trucking Companies in Houston](https://enrich.chat/companies-in/houston-tx/truck-transportation/): Truck Transportation
- [Facilities Services Companies in Houston](https://enrich.chat/companies-in/houston-tx/facilities-services/): Facilities Services
- [Legal Services Firms in Houston](https://enrich.chat/companies-in/houston-tx/legal-services/): Legal Services
- [Manufacturers in Houston](https://enrich.chat/companies-in/houston-tx/manufacturing/): Manufacturing
- [Wholesale Distributors in Houston](https://enrich.chat/companies-in/houston-tx/wholesale/): Wholesale
- [Technology and Internet Companies in Houston](https://enrich.chat/companies-in/houston-tx/technology-information-and-internet/): Technology; Information and Internet

**Short answer:** Browse the bigger companies headquartered in Houston, TX by industry. Each page lists up to 25 of the biggest by headcount range, what they do and how big they are.

## Key takeaways

- Each page lists up to 25 of the biggest companies in one industry.
- Sizes are ranges, never exact headcounts.
- Ask your AI agent to use www.enrich.chat to find the people at any of them.

## Frequently asked questions

### How are the companies chosen?

Companies shown have a working website that matches their name and list Houston, TX as their headquarters. The biggest by headcount range come first.