| J magnitude | Magnitude J |
| J Sharp | J sharp |
| J-Cat | Dépression |
| J-pop | Jpop |
| J. D. Salinger | J. D. Salinger |
| J. M. Barrie | James Matthew Barrie |
| Jaan Juris | Jaan Juris |
| Jaan Kirsipuu | Jaan Kirsipuu |
| Jaan Kross | Jaan Kross |
| Jaap de Hoop Scheffer | Jaap de Hoop Scheffer |
| Jaap Stam | Jaap Stam |
| Jabal ad-Duruz | Djébel el-Druze |
| Jabal al-Tair Island | Jabal al-Tair |
| Jabalia | Jabaliya |
| Jabba the Hutt | Jabba le Hutt |
| jabberer | jaseur |
| jabbering | rabâcheur |
| Jaber Al-Ahmad Al-Jaber Al-Sabah | Jaber Al-Ahmad Al-Sabah |
| Jaberg | Jaberg |
| Jablanica | Jablanica |
| Jablanica District | Jablanica |
| Jablanka | Jablanka |
| Jableh | Jabala |
| Jableh Sporting Club | Jabala SC |
| Jablonec nad Nisou | Jablonec nad Nisou |
| jabot | jabot |
| Jabref | Jabref |
| Jabuka | Jabuka |
| Jabukovac | Jabukovac |
| Jac | JAC |
| Jaca | Jaca |
| Jacek Kaczmarski | Jacek Kaczmarski |
| Jacek Kuroń | Jacek Kuroń |
| Jacen Solo | Jacen Solo |
| Jacint Verdaguer | Jacint Verdaguer |
| Jacinto Benavente | Jacinto Benavente |
| Jacinto Quincoces | Jacinto Quincoces |
| jack | valet |
| Jack Adams | Jack Adams |
| Jack Adams Award | Trophée Jack Adams |
| Jack and the Beanstalk | Jack et le Haricot magique |
| Jack Black | Jack Black |
| Jack Brabham | Jack Brabham |
| Jack Bruce | Jack Bruce |
| Jack Carter | Jack Carter |
| Jack Charlton | Jack Charlton |
| Jack Coleman | Jack Coleman |
| Jack daw | Choucas des tours |
| Jack Dempsey | Jack Dempsey |
| Jack Finney | Jack Finney |
| Jack Hawkins | Jack Hawkins |
| Jack Hobbs | Jack Hobbs |
| Jack Johnson | Jack Johnson |
| Jack Kerouac | Jack Kerouac |
| Jack Kevorkian | Jack Kevorkian |
| Jack Kilby | Jack Kilby |
| Jack Kirby | Jack Kirby |
| Jack Kirwan | Jack Kirwan |
| Jack Lang | Jack Lang |
| Jack Laviolette | Jean-Baptiste Laviolette |
| Jack Lemmon | Jack Lemmon |
| Jack London | Jack London |
| Jack Lynch | Jack Lynch |
| Jack Nance | Jack Nance |
| Jack Nicholson | Jack Nicholson |
| Jack of Diamonds | Valet de Carreau |
| Jack Palance | Jack Palance |
| Jack Pierce | Jack Pierce |
| Jack Radcliffe | Jack Radcliffe |
| Jack Ruby | Jack Ruby |
| Jack Russell | John Russell |
| Jack Russell Terrier | Jack Russell Terrier |
| Jack screw | Vis à chasser |
| Jack Shephard | Jack Shephard |
| Jack Skellington | Jack Skellington |
| Jack Snipe | Bécassine sourde |
| Jack Sparrow | Jack Sparrow |
| Jack Steinberger | Jack Steinberger |
| Jack Straw | Jack Straw |
| Jack Swigert | Jack Swigert |
| Jack the Ripper | Jack l'éventreur |
| jack up | augmenter |
| Jack Vance | Jack Vance |
| Jack Warner | Jack Warner |
| Jack White | Jack White |
| Jack Williamson | Jack Williamson |
