| ID | Name | Type |
|---|---|---|
| #10599 | Origin Systems Inc | P |
| #10600 | Original Computers Associaton | Z |
| #10601 | Original Soft | Z |
| #10602 | Orijon Software | Z |
| #10603 | Orin Soft | Z |
| #10604 | Orion Data Ltd | Z |
| #19426 | Orion Ostrava | P |
| #10605 | Orion Pictures Corporation | Z |
| #10607 | Orion Software [CZ] | Z |
| #10606 | Orion Software [UK] | Z |
| #10608 | Orion [1] | Z |
| #10609 | Orion [2] | Z |
| #10610 | Orion [3] | Z |
| #10611 | Orionsoft | Z |
| #21683 | Orla [Bearsden Primary 2023] | + |
| #10612 | Orlando Anibal Filadelfi | ? |
| #10613 | Orlando Araujo | + |
| #21386 | Orlando Duarte | + |
| #17997 | Orlando M. Pilchard | + |
| #10614 | Orme Electronics | H |