Newcomers Club of Howard County
- A social organization for women to assimilate newcomers into the community.
- http://newcomershowardcounty.com/

Howard County Maryland Special Olympics
- a year-round training and competitive sports program for Howard County children and adults with mental Retardation and/or closely related developmental disabilities
- http://www.somdhc.org/

MDGenWeb: Howard County Genealogy
- Affiliated with the MDGenWeb and USGenWeb projects this site provides resources for history and genealogy research.
- http://www.rootsweb.com/~mdhoward/

Howard County Genealogical Society
- Membership information and calendar of events.
- http://www.hcgsmd.org/

Howard Astronomical League
- Astronomy club. News, history, event calendar and photo gallery.
- http://www.howardastro.org/

The Howard County Farm Bureau
- A private, non-profit membership organization working to increase net farm income and improve the quality of life by providing a legislative voice, increasing public understanding and promoting member involvement. History, events and newsletters.
- http://howardfarmbureau.org/

Preservation Howard County
- A non-profit organization dedicated to protecting and preserving the local historic sites. News, events and how to become involved.
- http://preservationhowardcounty.org/

Howard County Fairgrounds
- Event schedule and information about the Howard County Fair.
- http://howardcountyfair.com/

Howard County Antique Farm Machinery Club
- Dedicated to preserving the agricultural way of life through educational and informative programs that offer presentations and displays designed so those participating can experience the agricultural way of life.
- http://www.farmheritage.org/

Wikipedia - Howard County, Maryland
- Free encyclopedia. History, government, geography, demographics and unincorporated areas.
- http://en.wikipedia.org/wiki/Howard_County%2C_Maryland

Columbia Housing Corporation
- A non-profit professional real estate organization which provides affordable housing for low income renters. Includes news, list of properties owned and managed, and current projects.
- http://www.columbiahousing.org/

Howard County Historical Society
- Includes information about current exhibits, events, publications, collections and membership.
- http://www.hchsmd.org/

Kangaroo Kids
- Howard County's precision jump rope team. Includes history, team members, performances, and jumping information.
- http://www.kangarookids.org/

Mothers Against Drunk Driving: Howard County
- Statistics, tips for parents, information about programs, and how to help.
- http://mywebpages.comcast.net/maddhowardcounty/

HCYP-Howard County Youth Program
- A youth sports program that includes volleyball, softball, basketball, and baseball recreational and travel leagues.
- http://hcyp.org

Animal Advocates of Howard County
- Nonprofit organization of concerned volunteers committed to putting an end to animal suffering in county. Lists available animals.
- http://www.animal-advocates.org/

Voices for Children
- A non-profit organization that recruits, trains and supervises for volunteers to be court appointed advocates for abused and neglected children.
- http://www.voicesforchildren.org/

Columbia Foundation
- Annually provides grants, technical assistance, and emergency funding to approximately sixty Howard County, Maryland nonprofit agencies delivering human services, cultural, and educational programs.
- http://www.columbiafoundation.org/