| #17345 | Holmesoft | S |
| #5926 | Holt | ? |
| #5927 | Holt Saunders Ltd | Z |
| #5928 | Holt, Rinehart and Winston of Canada Ltd | Z |
| #5929 | Home Adventure Writing Korporation | Z |
| #22267 | Home Arcade | Z |
| #17346 | Home Computer Centre | H |
| #18365 | Home Computer Software | P |
| #17348 | Home Computers | S |
| #17349 | Home Computing Weekend | C |
| #5931 | Home Entertainments | ? |
| #5932 | Home Masters | Z |
| #5933 | Home Micro Software | Z |
| #17350 | Home Micro-User | S |
| #5934 | Home [Programs] Soft | Z |
| #5935 | Home and Continental Computer Services Ltd | Z |
| #5937 | Homesoft | Z |
| #5938 | Homestudy Ltd | Z |
| #5939 | Hometown Software | Z |
| #17351 | Honey Computers | H |