| ID | Name | Type |
|---|---|---|
| #15578 | Yerzmyey | + |
| #15579 | Yes! Software | Z |
| #23109 | Yevrowl | P |
| #16706 | Yewser Friendly | ? |
| #15580 | Yin Chiu | + |
| #15581 | Yoav Kaveh | + |
| #15582 | Yodasoft | Z |
| #18800 | Yohan Palich | + |
| #15583 | Yolpa Brothers Productions | Z |
| #17900 | York Computer Centre | A |
| #15584 | Yorkshire Television Ltd | Z |
| #18713 | Yorrix | - |
| #18513 | Yoshiatom | + |
| #15585 | Yoshio Murase | + |
| #18883 | Young Artists | Z |
| #15586 | Younger Software | Z |
| #15587 | Your Computer | S |
| #15588 | Your Sinclair | Z |
| #15589 | Your Spectrum | S |
| #19352 | Yprit | P |