- Ocean Beach Grassroots Organization
 - Independent community organisation dedicated to social justice, ecological wisdom, civil rights, as well as gender and racial diversity. - Old Mission Beach Athletic Club (OMBAC)
- Serving amateur sport and youth athletics.
- San Diego Bonsai Club (SDBC)
- One of the oldest bonsai clubs in California, founded by 12 members in October, 1965, as a nonprofit educational corporation.
- San Diego Chapter of the American Planning Association
- Includes news and planning resources.
- San Diego Philanthropy
- Membership-based online community connecting grantmakers and grantseekers, providing exposure for nonprofit activities, news, and resource directory.
- Southern California Size Acceptance Coalition
- Utility Consumers' Action Network (UCAN)
- Organisation for Southern California consumers; an advocate in the areas of energy, cable and telephone service, auto insurance and gasoline costs.
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