SIHS
| Acronym | Definition |
|---|---|
| SIHS | Saint Ignatius High School (Cleveland, OH) |
| SIHS | Symbiosis Institute of Health Sciences (Symbiosis International University; India) |
| SIHS | Staten Island Historical Society |
| SIHS | South Iredell High School (Statesville, NC) |
| SIHS | Scottish Industrial Heritage Society (Edinburgh, Scotland, UK) |
| SIHS | STEPS (Science Technology Engineering Preview Summer Camp) into High School Program (University of Detroit Mercy; Michigan) |