| Orange Oranges Technologies | |
| Orange PC | Ontario |
| Orange Web Design | Ontario |
| OrangeBlack Software | Ontario |
| Orangepips | Ontario |
| OrangeSprocket | |
| OrangeTango | Quebec |
| Orangium | Quebec |
| Orangutan, Inc. | Ontario |
| Orangutech | Ontario |
| Orb Technologies, Inc. | Alberta |
| Orbis Communications, Inc. | Ontario |
| Orbit Satellite & Electronics | Alberta |
| Orbital Research Ltd | |
| Orbital Software Solutions, Inc, | |
| Orbital Technologies, Inc. | British Columbia |
| Orbittech | |
| Orbitum Labs, Inc. | |
| OrbitWeb, Inc. | Ontario |
| Orchard | |
| Orchestra Marketing | |
| Orckestra Conseil, Inc. | Quebec |
| Orderbot Software, Inc. | |
| OrderUp | |
| Ordi-Dépôt | |
| Ordi-Dépôt.ca | Quebec |
| Ordi-Tek | New Brunswick |
| Ordicentre | Quebec |
| OrdiCloud.com | |
| Ordifax | Quebec |
| OrdiGo Informatique | Quebec |
| Ordimatique | |
| Ordimédia Plus, Inc. | Quebec |
| Ordinacoeur | Quebec |
| Ordinatec | Quebec |
| Ordinatech Estrie, Inc. | Quebec |
| Ordinateur En Gros | Quebec |
| Ordinateur Express, Inc. | Quebec |
| Ordinateur Unitech Computers | Quebec |
| Ordinateur Vortex | Quebec |
| Ordinateurs GPRO | Quebec |
| Ordinateurs Laval | Quebec |
| Ordinatorium | Quebec |
| Ordinausore | Quebec |
| Ordino, Inc. | Alberta |
| Ordiplus Informatique | Quebec |
| OrdiSecur | Quebec |
| ORDISM | Quebec |
| Ordivert | Quebec |
| Orenex, Inc. | Ontario |