Greater New Haven Chamber Of Commerce
- Comprehensive overview of governmental affairs, business and tourism in the greater New Haven area.
- http://www.gnhcc.com/

The Greater Meriden Chamber of Commerce
- Information provided on events calendar, member and community services.
- http://www.meridenchamber.com/

Regional Growth Partnership
- Nonprofit economic development corporation covering 15 towns and cities from Milford to Madison and from New Haven north to Meriden.
- http://www.rgp-ct.org/

Greater Waterbury Chamber Of Commerce
- Advocate for the needs of the region's business community on major issues, it serves its membership through programs and services. Serving the business needs of Waterbury, Watertown, Oakville, Bethlehem, Thomaston, Woodbury, Middlebury, Southbury, Oxford
- http://www.waterburychamber.org/

Qunnipiac Chamber of Commerce
- Business, economic and tourism information for the North Haven - Wallingford, Connecticut areas.
- http://www.quinncham.com/