| Acronym | Definition |
|---|
| JR | Junior |
| JR | Jim Ross (wrestling personality) |
| JR | John Ross (Ewing; Dallas TV Show) |
| JR | Julia Roberts (actress) |
| JR | Jerry Rice (NFL player) |
| JR | Japan Rail(ways) |
| JR | John Ritter (actor) |
| JR | Jeremy Roenick (hockey player) |
| JR | Jive Records |
| JR | Jalen Rose (NBA Player) |
| JR | J Records (record label) |
| JR | Jumping Rope (aerobic exercise) |
| JR | Jam Resistant |
| JR | Jordan Rudess (Dream Theater) |
| JR | Johnny Rutherford (auto racer) |
| JR | Aero California (IATA Airline Code) |
| JR | John Reuben (musician) |
| JR | Joint Review |
| JR | Jupiter Research (Florida) |
| JR | Junctional Rhythm |
| JR | Jump Register (MIPS assembly) |
| JR | Jean-Romain |
| JR | Jacques Rouvier (classical pianist) |
| JR | Juno Regina (Latin: Juno the Queen, epigraphy) |
| JR | Job-Routed |