| 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) |