| American Society for Training and Development - http://www.astd-tucson.org/ An association for workplace learning, and performance professionals. Includes meeting times and location, online registration, and monthly newsletter. |
| Fourth Avenue Merchant's Association - http://www.fourthavenue.org/ Directory of stores, information about special events and street fairs, map, and trolley details. |
| LeTip of Tucson - http://www.letiptucson.com A leads group whose purpose is to provide quality leads and networking for its members. Includes meeting and membership information. |
| Professional Social Network of Tucson (PROSOC) - http://www.prosoc.org/ A nonprofit corporation made up of young, active, civic-minded professionals who have a clear vision for enhancing their ability to network and socialize. Includes meeting information. |
| Tucson Hispanic Chamber of Commerce - http://www.tucsonhispanicchamber.org/ Offers benefits and networking opportunities to help businesses succeed and gain access to the Hispanic market. Includes board of directors and business directories, membership information and application form. |
| Tucson Metropolitan Chamber of Commerce - http://www.tucsonchamber.org/ Its primary initiatives are in the areas of governmental affairs, political action, economic and community development, and member services. Includes a membership directory, news, and special events. |
| Tucson Regional Economic Opportunities, Inc. - http://www.treoaz.org/ Economic development agency. Describes mission and values, leadership, action plan, successes and highlights and investor database. |