- Fitness And WellnessSilicone Valley Hash House Harriers (SVH3)Self-described 'drinking club with a running problem'; 3-5 mile run/walk trails set anywhere from the South Bay to the mid-Peninsula, with beer checks and social circle afterward.
- Sports And RecreationSilicon Valley Disc Golf ClubNonprofit club formed in 1998 that maintains free-play disc golf courses in Santa Clara County and runs tournaments including the PDGA-sanctioned Silicon Valley Classic at Kelley Park.
- Career And NetworkingSilicon Valley Entrepreneurs & Startups (SVE)Silicon Valley's longest-running startup community with 36,000+ founders; since 2008 a launchpad for thousands of founders, now focused on empowering founders who build with AI.
- Sports And RecreationSilicon Valley Roller DerbyFlat track roller derby league founded in 2007 (formerly Silicon Valley Roller Girls), a WFTDA member league with multiple teams; always recruiting new skaters, referees, NSOs, announcers and volunteers - no experience needed.
- Sports And RecreationSilicon Valley Rugby Football ClubSouth Bay rugby football club with adult rugby teams and community participation.
- Fitness And WellnessSilicon Valley Triathlon ClubSouth Bay triathlon community for swimming, cycling, running, racing, and social connection.
- Arts And CraftsSilicon Valley WoodturnersSouth Bay/Silicon Valley woodturning club for turners, demos, and learning.
- Career And NetworkingSilicon Valley Young Professionals (SVYP)SVYP is a council within the SV Chamber focused on young professionals, with bi-monthly meet-ups that often take the form of happy hour mixers; informally under-40 ('we do not card at the door').
- Social And MeetupsSIR Branch 161 (Sons In Retirement)A branch of Sons In Retirement, a nonprofit public benefit organization for men, with members from Discovery Bay, Brentwood and surrounding communities; activities include bowling, golf, pickleball, tennis, RVing, cycling and wine tasting.
- Sports And RecreationSnowchasers Ski & Snowboard ClubConcord-based ski and snowboard club formed in 1983; a year-round activities and social club for families, couples and singles in the East Bay, with a recreational race team and affiliation with Bay Area Snow Sports Council and Far West Ski Association.
- Social And MeetupsSocial San Francisco: Events for IntrovertsA group for introverts in San Francisco to socialize and make friendships in relaxed environments.
- Career And NetworkingSociety of Women Engineers - Bay Area SectionsUmbrella-style row for Bay Area SWE sections supporting women engineers through events, networking, outreach, and leadership.