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# Companies in San Francisco, CA

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

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

## Industries in San Francisco

- [Software Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/software-development/): Software Development
- [Technology and Internet Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/technology-information-and-internet/): Technology; Information and Internet
- [IT Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/it-services-and-it-consulting/): IT Services and IT Consulting
- [Financial Services Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/financial-services/): Financial Services
- [Advertising Agencies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/advertising-services/): Advertising Services
- [Real Estate Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/real-estate/): Real Estate
- [Construction Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/construction/): Construction
- [Hospitals and Health Care Organizations in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/hospitals-and-health-care/): Hospitals and Health Care
- [Consulting Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/business-consulting-and-services/): Business Consulting and Services
- [Nonprofit Organizations in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/non-profit-organizations/): Non-profit Organizations
- [Venture Capital and Private Equity Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/venture-capital-and-private-equity-principals/): Venture Capital and Private Equity Principals
- [Design Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/design-services/): Design Services
- [Architecture Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/architecture-and-planning/): Architecture and Planning
- [Staffing and Recruiting Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/staffing-and-recruiting/): Staffing and Recruiting
- [Law Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/law-practice/): Law Practice
- [Cybersecurity Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/computer-and-network-security/): Computer and Network Security
- [Biotechnology Companies in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/biotechnology-research/): Biotechnology Research
- [Colleges and Universities in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/higher-education/): Higher Education
- [Education Organizations in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/education-administration-programs/): Education Administration Programs
- [Legal Services Firms in San Francisco](https://enrich.chat/companies-in/san-francisco-ca/legal-services/): Legal Services

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