| Sinclair ZX Spectrum cass. |  Highrise Harry | 1983 | Blaby Computer Games |
| Sinclair ZX Spectrum cass. | Hopper | 1983 | Soft & Easy |
| Sinclair ZX Spectrum cass. | Hopper Model 019 | 1983 | PSS Personal Soft. Services 012484 |
| Sinclair ZX Spectrum cass. | Horace & the Spiders Model G24/S | 1983 | Sinclair Research, Ltd. |
| Sinclair ZX Spectrum cass. | Horacio Esquiador | 1983 | Investronica Spain |
| Sinclair ZX Spectrum cass. | Horror Atoll | 1983 | Kayde Soft. |
| Sinclair ZX Spectrum cass. | Hot Dot Spotter | 1983 | Longman Soft. |
| Sinclair ZX Spectrum cass. | Hotfoot | 1983 | Microsphere Computer Services, Ltd. |
| Sinclair ZX Spectrum cass. | Hummer House of Horror | 1983 | Lasersound |
| Sinclair ZX Spectrum cass. | Hunchy | 1983 | Mr. Micro |
| Sinclair ZX Spectrum cass. | Hunter-Killer Model PR 1012 | 1983 | Protek Computing |
| Sinclair ZX Spectrum cass. | Ilha dos Espiões | 1983 | Timex Portugal |
| Sinclair ZX Spectrum cass. | Impuls Cassette 007 | 1983 | Impulsoft |
| Sinclair ZX Spectrum cass. | In Search of the Orb | 1983 | CRL Group PLC London, England |
| Sinclair ZX Spectrum cass. | Inka-Tempel | 1983 | F+K Ware Germany |
| Sinclair ZX Spectrum cass. | Insomnia | 1983 | Scats |
| Sinclair ZX Spectrum cass. | Invaders Model DK 012 | 1983 | DK Tronics |
| Sinclair ZX Spectrum cass. | Invasion of the Body Snatchas! | 1983 | Crystal Computing |
| Sinclair ZX Spectrum cass. | Invincible Island | 1983 | Shepherd Soft., Richard |
| Sinclair ZX Spectrum cass. | Invisible Man | 1983 | Chalksoft Ltd. |
| Sinclair ZX Spectrum cass. | It's Only Rock 'n' Roll | 1983 | K-Tel International, Ltd. UK |
| Sinclair ZX Spectrum cass. | Itasundorious | 1983 | Hudson Soft. Hudson Group Japan |
| Sinclair ZX Spectrum cass. | Jackpot | 1983 | CRL Group PLC London, England |
| Sinclair ZX Spectrum cass. | Jagd | 1983 | Laussoftware |
| Sinclair ZX Spectrum cass. | Jaws Revenge | 1983 | Work Force |
| Sinclair ZX Spectrum cass. | Jawz Model S2 | 1983 | Elfin Soft., Ltd. |
| Sinclair ZX Spectrum cass. |  Jetpac | 1983 | Al Rushaid |
| Sinclair ZX Spectrum cass. | Jetpac | 1983 | Sinclair Research, Ltd. |
| Sinclair ZX Spectrum cass. | Jetpac Model 161001 | 1983 | Ultimate Play The Game |
| Sinclair ZX Spectrum cass. | Jigsaw | 1983 | Artic Computing, Ltd. |
| Sinclair ZX Spectrum cass. | Johnny Reb | 1983 | MC Lothlorien |
| Sinclair ZX Spectrum cass. | Joust Model SOF/SUS002 | 1983 | Softek International, Ltd. |
| Sinclair ZX Spectrum cass. | Jumbly Model DK 030 | 1983 | DK Tronics |
| Sinclair ZX Spectrum cass. | Jumping Jack Model JAK | 1983 | Imagine Soft. Ocean Group 13156 |
| Sinclair ZX Spectrum cass. | Jungle Fever | 1983 | A&F Soft. |
| Sinclair ZX Spectrum cass. | Jungle Trouble | 1983 | Durell Soft. |
| Sinclair ZX Spectrum cass. | Junior Wordsplits | 1983 | Sulis Soft. |
| Sinclair ZX Spectrum cass. | Kalaha | 1983 | EMM Soft. Germany |
| Sinclair ZX Spectrum cass. | Kamakazi | 1983 | A&F Soft. |
| Sinclair ZX Spectrum cass. | Kamikaze | 1983 | Eyrolles France |
