| Acronym | Definition |
|---|
| RCNS➣Research Center for Neutrino Science (Tohoku University; Japan) |
| RCNS➣Real Club Nautico de Salinas (Spanish nautical club) |
| RCNS➣Research Center for Nanodevices and Systems (Hiroshima University) |
| RCNS➣Redundant Complex Number System |
| RCNS➣Research Center for the Natural Sciences (est. 1962; University of Santo Tomas; Philippines) |
| RCNS➣Ramapo Community Nursery School (New City, NY) |
| RCNS➣Rockland Cooperative Nursery School (New York) |