| RNCA | Rebecca Nebres Cepe Antonio 
| Others |
| RNCA | Registered Nurse Class A
| Others |
| RNCA | Registrant Name Change Agreement
| Others |
| RNCA | Registrant Name Change Application
| Others |
| RNCA | Resident Neighborhood Community Association
| Others |
| RNCA | Richmond Neighborhood Community Association
| Others |
| RNCA | Ridgeview Neighborhood Civic Association
| Others |
| RNCA | Riparian National Conservation Area
| Others |
| RNCA | Riparian National Conservation Areas
| Others |
| RNCA | Riverside Nature Center Association
| Others |
| RNCA | Roller Non Contact Accumulation
| Others |
| RNCA | Romanian National Cynologic Association
| Others |
| RNCA | Royal Natal Carbineer Association
| Others |
| RNCA | Royal Naval Communications Association
| Others |
| RNCA | Royal Navy Commando Association
| Others |
| RNCA | Royal Newfoundland Constabulary Association
| Others |