Optimal Group Inc.
Optimum Publishing International (1984) Inc.
Optimum Talent Inc.
Optimus Capital Corporation
Optimus Limited
Options-North Research Services Inc.
Optiwatt Inc.
Opus Impact (canada) Inc.
Oralor Holdings Inc.
Oramax Radiology Services Inc.
Oranda Management Co. Inc.
Orbis Financial Corporation
Orbiscience Inc.
Orbitel Inc.
Orcata Holdings Ltd.
Orchard Grove Properties Inc.
Orderin Inc.
OrderQuality.com INC.
Origami Designs & Paper Products Inc.
Origen Telecom Inc.