Maryland Motor Truck Association
- Statewide nonprofit organization serving and representing the trucking and transportation industry. Includes information about proposed and enacted legislation affecting the industry.
- http://www.mmtanet.com/

High Technology Council of Maryland
- Seeks to provide support, networking, educational and professional development of the area's high technology community, including firms, federal laboratories, education institutions and business support firms.
- http://techcouncilmd.com/index.html

Maryland Small Business Week Awards Program
- Program conducted by the U.S. Small Business Administration, celebrates National Small Business Week by honoring its award winners.
- http://mdsbaawards.org/

AIA Maryland
- Announcements, calendar, design awards, newsletter, regional directors, services directory plus information on continuing education.
- http://www.aiamd.org/

Brewers' Association of Maryland
- Non-profit trade association. Includes news, member breweries and events.
- http://www.mdbeer.com/

AIA Potomac Valley
- Chapter overview, news, calendar, design awards and services information.
- http://www.aiapvc.org/

AIA Chesapeake Bay
- Mission statement, newsletter, calendar, job listings, photo gallery and general information from chapter serving the western and eastern shores of Maryland.
- http://www.aiachesapeakebay.org/

Maryland Hispanic Chamber of Commerce
- The voice of Hispanic business in Maryland. Membership and event information.
- http://www.mdhcc.net/

Maryland Wine
- Home of the Association of Maryland Wineries and the Maryland Grape Growers Association. Includes a history and description of the state's products and a list of wineries.
- http://www.marylandwine.com/

Maryland / Israel Development Center
- A partnership between the Maryland Department of Business and Economic Development, the Israeli Ministry if Industry and Trade and the Associated Jewish Federation of Baltimore that promotes trade, joint ventures and investment between Maryland and Israel
- http://www.marylandisrael.org/

Choose Maryland
- Outreach effort for the Maryland Department of Business and Economic Development.
- http://www.choosemaryland.org/

Business Network Int'l
- Business referral organization.
- http://www.bnimaryland.com/

Better Business Bureau of Greater Maryland
- Includes news and calendar, online access to company reports and complaint filing system.
- http://www.baltimore.bbb.org/

Maryland Association of Professional Organizers
- Includes explanation of the profession, description of services, members, events, and history.
- http://www.mapoinfo.com/

State Employees Credit Union of Maryland - SECU
- Not-for-profit financial services institution.
- http://www.secumd.org/

American Institute of Floral Designers (AIFD)
- a non-profit organization dedicated to promoting the art of floral design as a professional career through educational programs and symposiums.
- http://aifd.org

Independent Insurance Agents of Maryland
- consumer insurance information and a listing of professional insurance agents licensed to do business in the State of Maryland.
- http://www.iiamd.org/

Parenteral Drug Association
- Association for pharmaceutical science and technology, provides scientific education, professional meetings, publications, membership benefits and features.
- http://www.pda.org

MedChi, The Maryland State Medical Society
- Serves as an advocate and resource for physicians, their patients and the public health through its programs and services, legislation information and news, and contacts.
- http://medchi.org/

American Society of Landscape Architects (ASLA), Maryland Chapter
- Professional association that offers details on events, awards, programs and services to members and guests.
- http://www.mdasla.org/

Maryland Classified Employees Association
- a member-run organization. An advocate for Maryland public employees.
- http://www.mcea.org/

Maryland Association of Certified Public Accountants
- Provides member resource center and information about finding a CPA for the public.
- http://www.macpa.org/

Maryland Coalition of Police and Deputy Sheriffs
- The state organization for IUPA locals in the state of Maryland
- http://marylandcops.org/