| Abbreviation | Definition |
|---|---|
| SCDAA | Sickle Cell Disease Association of America |
| SCDAAI | Sickle Cell Disease Association of America, Inc. |
| SCEP | Shelter Care Educational Program |
| SCF | Frank Samford, Jr., Chess Foundation |
| SCF | Senior Care Fund |
| SCF | Sierra Club Foundation |
| SCF | Skin Cancer Foundation |
| SCFCT | SladeChild Foundation Charitable Trust |
| SCHID | Scottish Child Health Information Development |
| SCHN | Sonoma County Homeschoolers Nonprofit |
| SCI | Sky Cross, Inc. |
| SCI | Sky Cross, Incorporated |
| SCI | Society of Composers Incorporated |
| SCI | Strong City International |
| SCI/D | Spinal Cord Injuries and Diseases |
| SCIBA | Southern California Independent Booksellers Association |
| SCIN | Spinal Cord Injury Network |
| SCINI | Spinal Cord Injury Network, Inc. |
| SCIP | Society Of Competitive Intelligence Professionals |
| SCIU | Save the Children In Uganda |