| Acronym | Definition |
|---|
| CSNI➣Committee on the Safety of Nuclear Installations |
| CSNI➣Czech Standards Institute |
| CSNI➣Communications Systems Network Interoperability |
| CSNI➣Central Suffolk and North Ipswich (county constituency; UK) |
| CSNI➣Cancer Services of Northeast Indiana (Fort Wayne, IN) |
| CSNI➣Consolidated Secret Network Infrastructure (Canada) |
| CSNI➣Careers Service Northern Ireland (Department for Employment and Learning; UK) |