- Sports Wellness And RecreationTrinity Dodgeball LeagueTrinity Dodgeball is an Oakland adult sports League that connects people through the great game of dodgeball.
- Sports Wellness And RecreationTrivalley Running Club (TVRC)A group of passionate runners in the SF Bay Area (East Bay, South Bay, and Peninsula) offering free year-round group runs, half marathon training, and race pacing.
- Social And MeetupsTwins by the BayTwins by the Bay is a non-profit, member-run support group for parents of multiples (twins, triplets, etc.) in the East Bay.
- Sports Wellness And RecreationUnited Flyers of Sonoma (UFOS) Disc Golf ClubFounded in 1976 on the campus of Sonoma State University, UFOS is a not-for-profit organization dedicated to promoting the sport of disc golf in the North Bay; offers weekly tournaments at its courses, a putting league, and marksman challenge.
- Culture And LanguageUnited German-American Societies of San Francisco and Vicinity (UGAS SF)Umbrella organization of 14 German-American member organizations in the wider San Francisco Bay Area between Santa Rosa and San Jose, founded in 1890; main event is the annual German Day celebration.
- Sports Wellness And RecreationUnited in Stride
- Science Tech And CodingUnity User Group: San FranciscoOfficial Unity user group supporting local game, app, and media creators across the Bay Area.
- Volunteering And CausesUrban Forest FriendsWe inspire and support people to come together to plant and care for trees.
- Science Tech And CodingUX San FranciscoUX and technology-design meetup covering design systems, AR/VR, data visualization, AI, ethics, and more.
- Books And WritingVacaville Chapter Chasers21+ women's only bookclub based in Vacaville, CA.
- Books And WritingVacaville Shelf IndulgenceCalling all book lovers! Whether you're a bookworm or just looking to meet new people, our club is the place for you!
- Games And TabletopVallejo Gem and Mineral SocietyVallejo Gem & Mineral Society, founded October 8, 1954, is a 501(c)(3) nonprofit dedicated to sharing knowledge of lapidary, lost wax casting, wire wrapping, silversmithing, beading, and other jewelry and crafting skills, with a club shop and annual show.
- Sports Wellness And RecreationVallejo Run ClubA group of runners, joggers, race-veterans, and beginners founded in 2022 that meets every week to motivate and inspire each other; 1-3 mile easy runs.
- Books And WritingVallejo Women's Book ClubGroup for book lovers who enjoy exploring a wide range of genres and authors, meeting monthly to discuss the latest read, share recommendations, and connect with fellow book enthusiasts.
- Outdoors And AdventureValley Spokesmen Bicycle ClubBay Area bicycle club based in Dublin with local and non-local rides, road and mountain biking.
- Sports Wellness And RecreationVarsity Gay Kickball LeagueOutLoud Sports San Francisco is home to kickball, dodgeball, soccer, football, pickleball, tennis, indoor and sand volleyball and bowling!
- Sports Wellness And RecreationVinerunnersNapa running club and social organization offering coached track workouts, hill workouts, and Saturday morning group runs exploring Napa Valley.
- Music Dance And PerformanceVoices Lesbian Choral EnsembleLesbian choral ensemble with rehearsals, performances, and LGBTQ+ arts community.
- Science Tech And CodingW6BB Amateur Radio ClubW6BB Amateur Radio Club at the University of California, Berkeley.
- Social And MeetupsWalnut Creek Area Neighbors and Newcomers ClubA women's social club open to all women in Walnut Creek and the greater Diablo Valley area, whether new or existing residents.
- Sports Wellness And RecreationWalnut Creek Masters Swim TeamUSMS-affiliated masters swim team in Walnut Creek (partnered with Pacific Masters and the Walnut Creek Aquatics foundation) offering coached practices for adult swimmers.
- Games And TabletopWalnut Creek Model Railroad SocietyThe Walnut Creek Model Railroad Society (WCMRS) operates the Diablo Valley Lines (DVL), one of the most mountainous and one of the largest exclusively HO scale model railroads in the United States, with public show dates.
- Business And CareerWalnut Creek Toastmasters Club (#8629)District 57 Toastmasters club meeting weekly in Walnut Creek to develop public speaking and leadership skills.
- Arts And CraftsWest Bay WoodturnersPeninsula woodturning club with meetings, demonstrations, and woodturning community.
- Sports Wellness And RecreationWest Berkeley Fencing ClubThe West Berkeley Fencing Club is a nonprofit organization dedicated to making the sport of fencing accessible and inclusive for people of all ages, backgrounds, and experience levels.