| Acronym | Definition |
|---|
| RJN➣Rada Jednosci Narodowej (Polish: Council of National Unity; quasi parliament of Poland during WWII) |
| RJN➣Russian Journal of Nematology |
| RJN➣Ram Janambhoomi Nyas (Hindi: Ram Birthplace Trust) |
| RJN➣Red de Jóvenes Nicaragüita (Spanish: Youth Network Nicaragüita) |
| RJN➣Rockland Journal-News (now The Journal News; New York) |