Machine producers starting with the letter O - page 3
| OEVERMANN | 1 | |
| OFB | 1 | |
| Ohne | 1 | |
| OHTORI KIKO | 1 | |
| OKADA | 1 | |
| OKUMA HOWA | 1 | |
| OKUMA CROWN | 1 | |
| OKUMA SIMULTURN | 1 | |
| OKUMA SIMULTURN LU-300MY | 1 | |
| Oleotecnica | 1 | |
| OLOFSSON | 1 | |
| OLYMPIC | 1 | |
| OLYMPIC SEIKI | 1 | |
| OM PIMESPO | 1 | |
| OMAB | 1 | |
| OMBA | 1 | |
| OMC | 1 | |
| Omca | 1 | |
| OMCG | 1 | |
| OMEGA | 1 |
