Grapevines
- Saad K’idilyé Diné Language Nest
- Sacramento Guys for Good
- Sacramento Latino Giving Circle
- Sacramento Women's Action Network
- Saffron Circle
- Saint Lucie Giving Circle
- Salem Professional Women for Good
- Salinas Professional Women for Good
- Saline County Women for Good
- Salt Lake City Next-Gen Women for Good
- Samantha Eaton's Giving Circle
- Samantha Rodgers' Giving Circle
- Samantha Williams's Giving Circle
- Sam Ringel's Giving Circle
- Samus Wizzel's Giving Circle
- San Antonio Guys for Good
- San Antonio Women in Business for Good
- San Diegans for Change
- San Diego Guys for Good
- San Diego Jewish Community Innovation Fund
- San Diego Women in Business for Good
- San Diego Women's Foundation
- San Fernando Valley Giving Circle
- San Francisco Black and Jewish Unity Coalition
- San Francisco Guys for Good
- San Francisco Latina Giving Circle
- San Francisco Manufacturing Professionals for Gender Equity
- San Francisco STEM Professionals for Gender Equity
- San Jose Guys for Good
- San Jose STEM Professionals for Gender Equity
- San Jose Women in Business for Good
- Sankofa Fund of Southwestern, PA
- Sankofa Fund of Southwest Pennslyvania
- Sansei Legacy
- Santa Ana Guys for Good
- Santa Barbara Business Owners for Good
- Santa Barbara Latino Giving Circle
- Santa Barbara Women for Good
- Santa Fe County Professional Women for Good
- Santa Rosa Women for Good
- Santo's Legacy
- Sara Darsky's Giving Circle
- Sarah Chinn's Giving Circle
- Sarah C’s Giving Circle
- Sarah Kruse's Giving Circle
- Saratoga Springs Guys for Good
- Sargeant's Army
- Savannah Guys for Good
- Savannah Professional Women for Good
- Save Democracy
- Save Democracy Now
- Save NC
- Save Our States
- Save the Shores
- SaveYourState22
- Saving Democracy (again) in Pennsylvania
- Saving Democracy One Seat at a Time
- SCA Young Professionals Giving Circle
- Scholarship for Orphans that want to study Abroad in Nigeria
- Science Women for Purdue Giving Circle
- Scottsdale Guys for Good
- Scottsdale Professional Women for Good
- Seacoast Women's Giving Circle
- Seattle Guys for Good
- Seattle STEM Professionals for Gender Equity
- Seattle Women in Business for Good
- SecondAct IMPACT
- Second-Hand Store
- Second Serve
- Second Step Ministry of North America
- SeedMN Giving Circle
- Seeds Giving Fund
- Seed (Small Businesses and Entrepreneurs Enriching and Developing) Charlotte
- Seeds Of Resilient Daughters Giving Circle
- Seeds of Strength
- Send Your Bread - Keren Baktana
- Senesh Lower School Giving Circle
- Senior Giving Circle
- Seniors for Democracy
- Seniors Taking Action
- Seth's Picks
- Seven Generations Circle of Women
- Sewing for Hope Spring
- Sex Worker Giving Circle
- Shade Partnership Fund
- Shadhika Project, Inc.
- Shared Giving
- Sharon Gregory's Giving Circle
- Shashank RK's Giving Circle
- SHE100
- Sheila's Giving Circle
- Shelburne Gives!
- Sherry Jones's Giving Circle
- Shining Light On The Lives of At-Risk Youth & Families During This Holiday Season
- Shir Tikvah Giving Circle
- Shorashim - Jewish Community Foundation of Greater MetroWest NJ
- Show Me Democracy
- Shreveport Guys for Good
- Shreveport Women for Good
- Silicon Valley Giving Circle
- Silicon Valley Guys for Good
- Silicon Valley Real Producers Giving Circle
- Silicon Valley Women for Good
- Silver Academy Alumni Giving Circle
- Simple Recovery
- Sinclair Circle
- Sioux Falls Professional Women for Good
- SisterFund
- SisterHoodfishing.com
- Sisterhood for Good
- Sisterhood of Philanthropists Impacting Needs,SPIN
- Sisters' Circle of Greater Kansas City
- Sisters Doin It For Themselves
- Sisters Giving Circle
- Sisters in Law
- SISTER TAKE MY HAND: FROM OUTRAGE TO ACTION
- Sistuh Fund Giving Circle / Sistuhs on the Move
- Sixth & I Giving Circle
- Skin Positivity Supporters
- Skp
- Slapygino
- Slingshot Fund
- Slow Food Vermont Giving Circle
- SLWV Arizona Strong
- Small But Mighty
- Small Change Giving Circles
- Snow Sports People for Good
- Sober Black Girls Club
- Social4Good
- Social Capital Philanthropists
- Social Entrepreneurship Circle
- Social Giving Club
- Social Venture Circle
- Social Venture Partners Philadelphia
- Social Venture Partners Portland
- Social Venture Partners San Antonio
- Social work
- Social work
- SolidariDAR Giving Tuesday Colombia
- SOLIDARIEDADE NA MOKILI
- Solidarity Across the States
- So Many Thoughts
- SOSS PDX
- Soul Connection
- SOUP Ottawa
- South Asian Giving Circle, CA
- South Bay Latino Giving Circle
- Southend Soup
- Southern Maine, Fellowship of Christian Athletes
- South Shore Giving Circle
- South Side Giving Circle
- South Side Giving Circle
- South Sound 100 Women
- Spark Ottawa - United Way
- Sparks Guys for Good
- Sparks Women for Good
- Spartanburg Manufacturing Professionals for Gender Equality
- Spinsters of San Francisco
- Spirit of Dixie Horse Hayven Co
- Spirit of St Louis Womens Fund
- Spirit of St. Louis Women's Fund
- Spokane Dining For Women
- Spokane Professional Women for Good
- Sport-SOS
- Spread Santa Fe
- Springboard Foundation
- Springfield (IL) Guys for Good
- Springfield (MA) Guys for Good
- Springfield Professional Women for Good
- Springfield Women with a Purpose
- Spring into Action: Reproductive Justice
- Stacey Supports States
- Stamford Guys for Good
- Stamford Women for Good
- Stand By Democracy For All
- Stand Up, Fight Back
- Stanislaus County Women for Good
- Stanislaus Latino Giving Circle
- Starfish Project Foundation
- Startups for Good - Tech Startup Nonprofits
- State by State
- State College Residents for Good
- State Democracy Matters!
- State Fair
- State Legislatures Matter
- Staten Island Giving Circle
- States Focus Giving Circle
- States Project Giving Circle
- States Squad
- Stay Calm and Vote
- Steamboat Springs Guys for Good
- Steamboat Springs Women for Good
- Steffi Wickens' Giving Circle
- Stegner Giving Circle
- Stephen Rosenfeld's Giving Circle
- Sterling Heights Guys for Good
- Stern Social Action Fund
- Steven Krugman's Giving Circle
- Steve Posner's Giving Circle
- STL Gateway to Hope