| 39522 | Jam! | ZX-Spectrum 48K | English |
| 39524 | Jam! with Gypsy Tarot | ZX-Spectrum 48K | English |
| 11292 | James Bond 007 Action Pack | ZX-Spectrum 48K | English |
| 20476 | James Pond - Codename: Robocod | ZX-Spectrum 48K | English |
| 2578 | Jangler | ZX-Spectrum 48K | English |
| 30673 | Janis Joplin Speech System II (I Think) | - | English |
| 38331 | Janitor Jim | ZX-Spectrum 48K | English |
| 39474 | Janky Joe in Retro Hell | ZX-Spectrum 48K/128K | English |
| 40945 | Jannis the Menace | ZX-Spectrum 48K | English |
| 22450 | Jap Song | ZX-Spectrum 128K | English |
| 12880 | Japan Crossword | ZX-Spectrum 128K | English |
| 41408 | Japanese Garden | ZX81 16K | English |
| 21628 | Japanese Patience | ZX-Spectrum 48K | English |
| 22404 | Jargonaut | ZX-Spectrum 48K | English |
| 7492 | Jarre-Live | ZX-Spectrum 128K | English |
| 10836 | Jason and the Golden Fleece | ZX-Spectrum 48K | English |
| 9862 | Jason of the Argonauts | ZX-Spectrum 48K | English |
| 2579 | Jason's Gem | ZX-Spectrum 48K | English |
| 2580 | Jasper! | ZX-Spectrum 48K | English |
| 36485 | Javelin | Sinclair QL | English |