Over-the-Rhine Chamber of Commerce
- Presenting information on the historic Over-the-Rhine area, its attractions, arts, entertainment, businesses, and the OTR Chamber and Foundation.
- http://www.otrchamber.com/

Cincinnati Chapter of the American Marketing Association
- Provides information on conferences, seminars, and workshops.
- http://cincinnati.marketingpower.com/

Southwestern Ohio Building Officials Association
- A nonprofit corporation that seeks to foster cooperation between the building officials of the state, the construction industry and government.
- http://www.swoboa.org/

Cincinnati Chapter IAAP
- Organization for office professionals. Provides event calendar, board and member information.
- http://www.iaap-cinci.org/

Downtown Cincinnati Inc.
- Manages a special improvement district created to promote retail, office, small business, residential, transportation and environmental activities in the central business district.
- http://www.downtowncincinnati.com

Better Business Bureau
- Provides instant access to business and consumer alerts as well as helpful resources for Southern Ohio.
- http://www.cinbbb.org/

Cincinnati Bar Association
- Provides legal education, various law-related outreach programs, referral services and many community service projects.
- http://www.cincybar.org/