SIRU
| Acronym | Definition |
|---|---|
| SIRU | Space Inertial Reference Unit (Northrop Grumman) |
| SIRU | Social Informatics Research Unit (Deptartment of Sociology, University of York, UK) |
| SIRU | Social Inclusion Research Unit (School of Health, Social Care and Sport and Exercise Sciences; Glyndwr University; Wales, UK) |
| SIRU | Subtropical Insects Research Unit (USDA) |
| SIRU | Staphylococcal Interspersed Repeat Unit (microbiology) |
| SIRU | Stellar Inertial Reference Unit |