- Salt Creek Ballet
- Salt Creek Watershed Network
- Salvation Army Family and Community Services
- SamaraCare
- SCARCE
- SciTech
- SEASPAR
- Senior Home Sharing, Inc.
- Senior Suburban Orchestra
- Serenity House Counseling Services, Inc.
- SHARE Program of Leyden Family Service
- Sharing Connections
- Society of St. Vincent de Paul at St. Philip the Apostle Church
- Special Kids Day
- Spectrios Institute for Low Vision
- Spirito!
- Spring Brook Nature Center
- St. Andrew Lutheran Church (DuPage Multicultural Dance Troupe)
- Stepping Stones for Women of Domestic Violence
- Storycatchers Theatre
- Syrian Community Network
- Tate Woods Elementary School
- Teen Parent Connection
- Theatre Eclectic
- The Thursday Evening Club
- Three Fires Council, Boys Scouts of America
- Tri-Town YMCA
- Turning Pointe Autism Foundation
- Tutoring English to Advance Change
