| Acronym | Definition |
|---|
| RNCA➣Riparian National Conservation Area |
| RNCA➣Registrant Name Change Agreement (used for domain name transfers) |
| RNCA➣Royal Newfoundland Constabulary Association |
| RNCA➣Royal Naval Communications Association |
| RNCA➣Registrant Name Change Application |
| RNCA➣Romanian National Customs Authority |
| RNCA➣Regional Nuclear Cooperation in Asia |
| RNCA➣Riverside Nature Center Association |
| RNCA➣Russian National Cultural Autonomy |
| RNCA➣Richmond Neighborhood Community Association (Buffalo, NY) |
| RNCA➣Redes No Cartesianas Adaptadas |
| RNCA➣Resident Neighborhood Community Association (Cincinnati, OH) |
| RNCA➣Radio Network Control Assemblies |
| RNCA➣Renal Calculus |
| RNCA➣Romanian National Cynologic Association |
| RNCA➣Ridgeview Neighborhood Civic Association (Sandy Springs, GA) |