| Abbreviation | Definition |
|---|---|
| JEFFD | Jefferson Davis |
| JEGA | Jorge Eliécer Gaitán |
| JEO | James Edward Oglethorpe |
| JF | James Fenimore |
| JF | Jane Fonda |
| JF | Jerry Falwell |
| JF | John Franklin |
| JF | John Frusciante |
| JF | Jon Foreman |
| JFC | James Fenimore Cooper |
| JFO | John Frederick Oberlin |
| JG | Jay Gordon |
| JG | Jennifer Garner |
| JG | John Glen |
| JG | John Glenn |
| JG | John Golden |
| JG | John Goodman |
| JG | Jon Gunderson |
| JGJ | J. Gareth Jones |
| JGK | John Gerrard Keulemans |