| 12287 | Junior Wordsplits | ZX-Spectrum 48K | English |
| 14947 | Just a Mot: French Vocabulary | ZX-Spectrum 48K | English |
| 9118 | Kaart van Nederland | ZX-Spectrum 48K | Dutch |
| 22653 | Key Board Trainer | ZX-Spectrum 48K | English |
| 20297 | KeyStave | ZX-Spectrum 48K | English |
| 21410 | Keymania: Return to Fuck | ZX-Spectrum 48K | Russian |
| 4000046 | Kid Grams | Timex Tx2068 | English |
| 10998 | Kids on Keys | ZX-Spectrum 48K | - |
| 14986 | Kiming | ZX-Spectrum 48K | Spanish |
| 9119 | Kindercomp | ZX-Spectrum 48K | - |
| 25150 | Kinematyka | ZX-Spectrum 48K | Polish |
| 28914 | Kinetisches Gasmodell | ZX81 2K | - |
| 43871 | Kings Brunton Spelling Scheme - Cassette Five | ZX-Spectrum 48K | English |
| 18684 | Kings and Queens | ZX-Spectrum 16K | English |
| 17124 | Klio 1 | ZX-Spectrum 48K | Polish |
| 24896 | Klio 2 | ZX-Spectrum 48K | Polish |
| 38186 | Klokkijken Analoog | ZX-Spectrum 48K | Dutch |
| 17288 | Klokkijken Analoog + Klokkijken Digitaal | ZX-Spectrum 48K | Dutch |
| 25099 | Klávesnice | ZX-Spectrum 48K | Czech |
| 11832 | Know Your Own Personality | ZX-Spectrum 48K | English |