| Sinclair ZX Spectrum cass. |  Slippery Sid Model 5 | 1983 | Silversoft |
| Sinclair ZX Spectrum cass. | Smuggler | 1983 | CCS Cases Computer Simulations, Ltd. London, England |
| Sinclair ZX Spectrum cass. | Smuggler's Cove Model QSP 0046 | 1983 | Quicksilva |
| Sinclair ZX Spectrum cass. | Snackman | 1983 | Amba Soft. |
| Sinclair ZX Spectrum cass. | Snake | 1983 | Apocalypse Soft. |
| Sinclair ZX Spectrum cass. | Snake | 1983 | Artic Computing, Ltd. |
| Sinclair ZX Spectrum cass. | Snake Pit | 1983 | Postern |
| Sinclair ZX Spectrum cass. | Snooker | 1983 | Artic Computing, Ltd. |
| Sinclair ZX Spectrum cass. | Snooker | 1983 | Bonfield, G.R. |
| Sinclair ZX Spectrum cass. | Snooker Model VS-03-16 | 1983 | Visions Soft. Factory |
| Sinclair ZX Spectrum cass. | Snowball | 1983 | Level 9 Computing |
| Sinclair ZX Spectrum cass. | Softape 3 | 1983 | Soft Sell Computer Soft. |
| Sinclair ZX Spectrum cass. | Solaris | 1983 | Softel |
| Sinclair ZX Spectrum cass. | Solitaire | 1983 | CCS Cases Computer Simulations, Ltd. London, England |
| Sinclair ZX Spectrum cass. | Solo Whist | 1983 | Video Soft., Inc. |
| Sinclair ZX Spectrum cass. | Sorcerer's Castle | 1983 | Mikro-Gen UK |
| Sinclair ZX Spectrum cass. | Space Crystal | 1983 | Quark Data |
| Sinclair ZX Spectrum cass. | Space Island Model TSPC-1 | 1983 | Terminal Soft. |
| Sinclair ZX Spectrum cass. | Space Lanes + Laser Lander | 1983 | Cathedral |
| Sinclair ZX Spectrum cass. | Space Panic | 1983 | Mikro-Gen UK |
| Sinclair ZX Spectrum cass. | Space Raiders - Invasores Galácticos | 1983 | Timex Portugal |
| Sinclair ZX Spectrum cass. | Space Rescue + 3D Penalty Kick | 1983 | Wright, Brian William |
| Sinclair ZX Spectrum cass. | Space Shuttle | 1983 | ADI Accord Data International |
| Sinclair ZX Spectrum cass. | Space Shuttle | 1983 | Accord Data International, Ltd. |
| Sinclair ZX Spectrum cass. | Space Station Zebra | 1983 | Beyond Soft. |
| Sinclair ZX Spectrum cass. | Space Wreck | 1983 | Big Ben Soft. |
| Sinclair ZX Spectrum cass. | Space Wreck | 1983 | James, Christopher |
| Sinclair ZX Spectrum cass. | Space Zombies | 1983 | Mikro-Gen UK |
| Sinclair ZX Spectrum cass. | Spanish Gold | 1983 | Chalksoft Ltd. |
| Sinclair ZX Spectrum cass. | Spawn of Evil Model DK 009 | 1983 | DK Tronics |
| Sinclair ZX Spectrum cass. | Spec Man | 1983 | Impact Soft. |
| Sinclair ZX Spectrum cass. | Special Agent | 1983 | Heinemann |
| Sinclair ZX Spectrum cass. | Spectipede | 1983 | R&R Soft. |
| Sinclair ZX Spectrum cass. |  Spectipede Model IS 0021 | 1983 | Mastertronic, Ltd. UK 012967 |
| Sinclair ZX Spectrum cass. | Spectra Smash | 1983 | Romik Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Spectra Smash + Break Out | 1983 | Romik Soft., Ltd. |
| Sinclair ZX Spectrum cass. | Spectral Panic | 1983 | Hewson Consultants, Ltd. England 012635 |
| Sinclair ZX Spectrum cass. | Spectramon | 1983 | ASP Soft. |
| Sinclair ZX Spectrum cass. | Spectrapede Model PR1003 | 1983 | Protek Computing |
| Sinclair ZX Spectrum cass. | Spectraprobe | 1983 | Artic Computing, Ltd. |
