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| Jacinto Canek | Jacinto Canek | Crossover | |
| Jack Foster III | Evolution of Jazzraptor | Prog | |
| Jack Foster III | Raptorgnosis | Prog | |
| Jack Foster III | Tame Until Hungry | Prog | |
| Jack Or Jive | Absurdity | Electronic | |
| Jack Or Jive | Kakugo | new | Electronic |
| Jackal | Black Inside | Heavy Metal | |
| Jadis | Fanatic | Prog | |
| Jadis | Photoplay | Prog | |
| Jaén Kief | Las Hadas no Vuelan Más | Prog | |
| Jane | Shine On | Hard Rock | |
| Jansson Benny | Save the World | Virtuoso | |
| Jelly Jam | 2 | Hard Rock | |
| Jethro Tull | Living With the Past | Prog | |
| Jethro Tull | Christmas Album | Folk Rock | |
| Jethro Tull | Nothing is Easy | Prog | |
| Jetlag | Delusione Ottica | Prog | |
| Jezebel | Forbidden Fruit | Gothic | |
| Jil Is Lucky | The Wanderer | Rock | |
| Jing Chi | Live | Fusion | |
| Jing Chi | 3D | Fusion | |
| Jinmo | Neo Tokio | Avant Garde | |
| John-Krol Louisa | Ariel | Folk | |
| John-Krol Louisa | Alabaster | Folk | |
| Johnny Gray | We Give You the Grace to Show on Your Face | Rock | |
| Johnny Hollow | Dirty Hands | Gothic | |
| Johnson Rob | Rob Johnson / Peripheral / Guitarchitecture | Virtuoso | |
| Jonny A. | Sometime Tuesday Morning | Rock Blues | |
| Jorn | Worlchanger | Heavy Metal | |
| Jorn | Unlocking the Past + The Gathering | Hard Rock | |
| Jorn | Live in America | Hard Rock | |
| Journey | Red 13 | AOR | |
| Journey | Generations | AOR | |
| Judas Priest | Angel of Retribution | Heavy Metal | |
| Juglans Regia | Controluce | Prog Metal | |
| Juglans Regia | Visioni Parallele | Prog | |
| Jukka Tolonen Band | JTB | Fusion | |
| Jump | ...and All the King's Men | Prog | |
| Jupiter Society | First Contact - Last Warning | new | Prog Metal |