Oak Bay HR Inc.

Oakbridge Search Partners

OBJECTIV Fitness

Obsidian Group Inc.

OceanFront Wealth Inc.

Ochapowace Nation

Odgers Canada

Odyscène

OEC Group (Canada)

Oggi Trattoria

OHC English

OK Tire 17 Ave SW Calgary

OK Tire Canada

Old Salt Millwork

Olive Asset Management

Olive Consulting LTD

Olymel

OMD

OmniaBio

Omnicom Media

On Location

OnActuate

One Day I Wondered

One Health Clubs

Onest Insurance

Onion Lake Cree Nation

ONIT Construction Inc.

Onside AI

Ontario English Catholic Teachers' Association

OnX

ONxpress

Onyx Law Group

Onyx-Fire Protection Services Inc.

Op2 North America

OPA! of Greece

Open Parachute

Open Systems Technologies

OPENLANE

Opensity Solutions

Optimize Financial Group

Options Consulting Solutions

Opusing LLC - Staffing Agency

Orange Cyberdefense

Orano Canada

Ore Group

Organisme d’autoréglementation du courtage immobilier du Québec (OACIQ)

Orion Innovation

ORION Ontario's Research and Education Network

Orise

Orix Geoscience Inc.

ORO Labs

OSCO Construction Group

OSI GROUP - GROUPE SOI

OssKin

Osteo Tuina

Otsuka Canada Pharmaceutical Inc.

OTUS RH

Ou2There Solutions

Outright Consulting

Outset Law

Outwitly Inc.

OVHcloud