Donors:
- Andrea Salazar
- John "Tom" Salyers
- Dominique L. Sanchez
- Katherine Sanchez
- Shrenik Sanghvi
- Barbara Sawyer
- Kara Schechter
- Allaire Schlicher-Beutner
- Robert Schlueter
- Mary Schmidt
- Charles and Ruth Schmitter
- William Schneider
- Clara Schoonmaker
- Mathias Schueller
- Science Fiction Writers of America
- Jessica Scott
- Lacey Seckar-Anderson
- Autumn Sellers
- Cliff Seppanen
- Nicole Seyburn
- John J. Sfreddo
- Missy Shaner
- Beth Shapiro
- Kendra Shirey
- Sara Siebert
- Gabrielle Simon
- Alan and Shirley Sliker
- Shirley Brocker Sliker
- Trisha Slocum
- Adam Smith
- Sarah Somers
- Sharon Soon
- Kaitlynn Sova
- Megan Sowinski
- Paul Spearman
- Special Collections
- Louis C. (Lou) Stamatakos
- Christina Stone
- Student Tutorial Education Project (STEP)
- Ashley Sullivan
- Jacquelynn Sullivan
- Gilda Sundeen
- Kim and Judith Ann "Jude" Swanson