| 18057 | Jack y el Arca Maravillosa | ZX-Spectrum 48K | Spanish |
| 41379 | Jackpot | ZX81 16K | English |
| 40141 | Jackpot | ZX81 16K | English |
| 10540 | Jagd | ZX-Spectrum 48K | English |
| 2576 | Jail Break | ZX-Spectrum 48K | English |
| 44669 | Jailbreak | ZX81 16K | English |
| 41618 | Jailbreak | ZX81 16K | English |
| 13246 | Jam Sandwich | ZX-Spectrum 16K | English |
| 40992 | Jam Search | ZX-Spectrum 16K | English |
| 37291 | James Bond 007 dans la Mer des Caraïbes | ZX-Spectrum 48K | French |
| 2578 | Jangler | ZX-Spectrum 48K | English |
| 40945 | Jannis the Menace | ZX-Spectrum 16K | English |
| 41408 | Japanese Garden | ZX81 16K | English |
| 16054 | Jarama | ZX-Spectrum 48K | Spanish |
| 39163 | Jardineiro | ZX-Spectrum 48K | Portuguese |
| 16854 | Jarrin' Pick | ZX-Spectrum 48K | Spanish |
| 18513 | Javilero 3 | ZX-Spectrum 48K | Spanish |
| 16632 | Jaws | ZX-Spectrum 48K | English |
| 2582 | Jaws | ZX-Spectrum 48K/128K | English |
| 9863 | Jaws Revenge | ZX-Spectrum 16K | English |