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# Companies in Seattle, WA

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

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

## Industries in Seattle

- [Software Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/software-development/): Software Development
- [Construction Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/construction/): Construction
- [Real Estate Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/real-estate/): Real Estate
- [IT Services Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/it-services-and-it-consulting/): IT Services and IT Consulting
- [Nonprofit Organizations in Seattle](https://enrich.chat/companies-in/seattle-wa/non-profit-organizations/): Non-profit Organizations
- [Advertising Agencies in Seattle](https://enrich.chat/companies-in/seattle-wa/advertising-services/): Advertising Services
- [Technology and Internet Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/technology-information-and-internet/): Technology; Information and Internet
- [Consulting Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/business-consulting-and-services/): Business Consulting and Services
- [Hospitals and Health Care Organizations in Seattle](https://enrich.chat/companies-in/seattle-wa/hospitals-and-health-care/): Hospitals and Health Care
- [Financial Services Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/financial-services/): Financial Services
- [Architecture Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/architecture-and-planning/): Architecture and Planning
- [Law Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/law-practice/): Law Practice
- [Legal Services Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/legal-services/): Legal Services
- [Design Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/design-services/): Design Services
- [Education Organizations in Seattle](https://enrich.chat/companies-in/seattle-wa/education-administration-programs/): Education Administration Programs
- [Food and Beverage Manufacturers in Seattle](https://enrich.chat/companies-in/seattle-wa/food-and-beverage-manufacturing/): Food and Beverage Manufacturing
- [Facilities Services Companies in Seattle](https://enrich.chat/companies-in/seattle-wa/facilities-services/): Facilities Services
- [Colleges and Universities in Seattle](https://enrich.chat/companies-in/seattle-wa/higher-education/): Higher Education
- [Research Services Firms in Seattle](https://enrich.chat/companies-in/seattle-wa/research-services/): Research Services

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