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# Companies in San Antonio, TX

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

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

## Industries in San Antonio

- [Construction Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/construction/): Construction
- [Hospitals and Health Care Organizations in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/hospitals-and-health-care/): Hospitals and Health Care
- [Real Estate Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/real-estate/): Real Estate
- [IT Services Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/it-services-and-it-consulting/): IT Services and IT Consulting
- [Advertising Agencies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/advertising-services/): Advertising Services
- [Insurance Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/insurance/): Insurance
- [Software Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/software-development/): Software Development
- [Financial Services Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/financial-services/): Financial Services
- [Nonprofit Organizations in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/non-profit-organizations/): Non-profit Organizations
- [Consulting Firms in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/business-consulting-and-services/): Business Consulting and Services
- [Oil and Gas Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/oil-and-gas/): Oil and Gas
- [Facilities Services Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/facilities-services/): Facilities Services
- [Motor Vehicle Manufacturers in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/motor-vehicle-manufacturing/): Motor Vehicle Manufacturing
- [Staffing and Recruiting Firms in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/staffing-and-recruiting/): Staffing and Recruiting
- [Education Organizations in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/education-administration-programs/): Education Administration Programs
- [Telecommunications Companies in San Antonio](https://enrich.chat/companies-in/san-antonio-tx/telecommunications/): Telecommunications

**Short answer:** Browse the bigger companies headquartered in San Antonio, 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 San Antonio, TX as their headquarters. The biggest by headcount range come first.