| Acronym | Definition |
|---|
| RSEC➣Regional Special Events Center |
| RSEC➣Red Sea Environmental Centre (Salzburg, Austria) |
| RSEC➣Research Site for Educators in Chemistry (US NSF) |
| RSEC➣Radar Spectrum Engineering Criteria |
| RSEC➣Range Science Education Council (ecology; various locations) |
| RSEC➣Rising Star Equestrian Center (Massachusetts) |