S
- Sexually Transmitted Infections and Teen Pregnancy Prevention Initiative
- Smoke-Free Homes Research Project
- Special Diabetes Program for Indians
- South Dakota Produce Prescription Program
- Substance Abuse and Suicide Prevention, Domestic Violence Prevention, & Forensic Healthcare Technical Assistance Program
- Self-Harm
- Sexually Transmitted Infections
- Smoking and Diabetes in Indian Country
- Suicide and Suicidal Behavior
- Suicide Prevention
- Stroke
- Stroke Prevention
- Syphilis