Maskin produsenter starter med bokstaven O - side 2
| OMERA | 3 | |
| OMP | 3 | |
| OOYA | 3 | |
| OTC DAIHEN | 3 | |
| OCEAN TECHNOLOGIES CO | 2 | |
| OLIVETTI | 2 | |
| OLYMPIA | 2 | |
| OMAP | 2 | |
| OMEG | 2 | |
| OMES | 2 | |
| ONA-PRES | 2 | |
| OZGENC MAKINA | 2 | |
| O K | 1 | |
| O.M.D. | 1 | |
| OCEAN AVENGER PEDDINGHAUS | 1 | |
| Ocemi | 1 | |
| Oemme s.p.a. | 1 | |
| OERLIKON AIR LIQUIDE Column welding machine | 1 | |
| OERLIKON MATTISON | 1 | |
| OEVERMANN | 1 |
