| American Numismatic Association: Maryland: Features a directory of coin clubs throughout the state. |
| Baltimore Ferret Club: Dedicated to promote and support the domestic ferret. Includes activity and membership information, a calendar of events, a photo gallery and resource links. |
| Baltimore Radio Amateur Television Society: Provides support and networking for amateur radio and amateur television (ATV) communities through emergency communications, public service, education, and experimentation. Sponsors the annual BRATS Maryland Hamfest and Computer Fest. |
| ElSurfo - Sports - Maryland: Sports in Maryland. Features links to many teams, events and websites. |
| GO-AdventureSports: Specializing in custom teambuilding, ropes courses, climbing, caving, mountain biking, and orienteering instruction. Programs and instruction for youth and adults. |
| GolfMaryland: Guide to public golf facilities in Maryland. |
| Heart of Maryland Classic Chevy Club: Find meeting and event information, classifieds, and member news. |
| Libation Association of Northern Maryland: Home brewing club located in Harford County. Includes meeting schedule, recipes, calendar of events, and articles. |
| Maryland Bowhunters Society: Includes purpose, by-laws, news, and photos. |
| Maryland License Plates: Presented by Al Virta. Features a photo collection and overview from 1952 to the state's 350th anniversary plate. |
| Maryland Orchid Society: Brings together people interested in orchids to promote and encourage orchid culture, preservation, education propagation, hybridization, and all other orchid-related activities of interest to its members. Events calendar and fall auction are featured. |
| Maryland Scholastic Hockey League (MSHL): A boy's and girl's youth ice hockey organization managed by volunteers from all walks of life. MSHL high school level ice hockey program is affiliated with the Southeastern District, USA Hockey. |
| Maryland/Washington D.C. Racquetball Association: Information on events, rankings, and court information. |
| Mid Maryland Triathlon Club: Offers activities, social events, clinics, and workouts for beginning to experienced tri-athletes. Features membership information, upcoming races and results, and a forum. |
| NAWCC Free State Chapter 141: National Association of Watch and Clock Collectors. Features chapter news, events, officers, meeting locations, and contacts. |
| Potomac Valley Golden Retriever Club: Contains club information, schedule of events, membership information and photographs. |
Classical
