| Abbreviation | Definition |
|---|---|
| Jordan | Just Ordinarily Righteous Doing Anything Necessary |
| JP | Jacque Pierre |
| JP | Jean Paul |
| JP | Jean Pierre |
| JP | Jens Pater |
| JP | John Patrick |
| JP | John Peirpont |
| JP | John Peter |
| JP | John Philip |
| JP | John Pierpoint |
| JP | John Pierpont |
| JP | Jon Paul |
| JP | Joseph Patrick |
| JP | Joshua Paul |
| JP | Justin Paige |
| JPAB | José Pedro Aguiar Branco |
| JQ | James Quentin |
| JQ | John Quincy (Adams) |
| JR | Jebediah Romano |
| JR | John Robert |