| Jahrb. | Jahrbuch |
| Jam. | (in the Bible) James |
| Jam. | (in author names) Jamieson |
| Jan. | January |
| Jap. | Japanese |
| Jas. | James |
| Jas. | (in the Bible) James |
| Jer. | (in the Bible) Jeremiah |
| joc. | jocular(ly) |
| Josh. | (in the Bible) Joshua |
| Jrnl. | journal |
| Jrnls. | journals |
| Jud. | (in the Bible) Judges |
| Judg. | (in the Bible) Judges |
| Jul. | July |
| Jun. | June |
| Jun. | junior |
| Jurisd. | jurisdiction |
| Jurisdict. | jurisdiction |
| Jurispr. | jurisprudence |
| Justif. | justification |
| Justific. | justification |
