O and G company

O'Chiese First Nation

O'Reilly Auto Parts

O2E Brands

OAHAS

Oak Hill Financial

Oak Valley Health

Oak View Group

Oakbridge Search Partners

Oakmont Management Group

Oakridge Landscape Contractors

Oakville Enterprises Corporation

Oakville Honda

Oakville Hydro

Oatey Co.

Oberson

Objectway Limited

OBM CONSULTANCY

OCAD University

OCEAN

Ocean / Océan

Ocean Capital

Ocean Homes

Ocean Spray, Manseau

Ocean Spray, Manseau (Qc)

Ocean State Job Lot

Ocean View

OceanFront Wealth Inc.

OceanMD

OceanMD, a WELL Health Company

OCL Group Inc.

OCS

OCS Ontario Cannabis Store

Octave

October's Very Own

Octopusapp Inc.

OculoVision

ODAIA

ODAIA Intelligence Inc.

Odforce

ODRA Road Sweepers

Odysphere Wellness Systems Inc

Odyssey Global

Odyssey Group

Odyssey Trust Company

OEC

OEC Group (Canada)

OEG Inc.

OERP Canada

Off Road 104

Office Municipal d'habitation de Bécancour

Office municipal d'habitation de Lévis

Office municipal d'habitation de Québec - OMHQ

Office Municipal d'Habitation de Saguenay

Office of the Auditor General of Ontario

Offices d'habitation du Bassin de Chambly et de Roussillon

Offworld Industries

Offworld Industries Ltd.

OhioX, Inc.

Oil and gas corporation

Okanagan Hockey Group

Okanagan Thompson Legal Clinic

OKAYA INFOCOM

Okta

Okta for Developers

Okta, Inc.

Old Navy

Oldcastle BuildingEnvelope

Oldcastle Inc.

OLH Construction

Olimag Sands Inc.

Oliver & Bonacini Hospitality

OLIVER Agency

Oliver Wyman

OLIVER | The Brandtech Group

Olivercarol

Olivine, Inc.

OLIX

Olsen

Olsen Consulting

Olymel

Olymel S.E.C.

Olympia Tile+Stone Inc.

Omaze

OMD

OMD Canada

Omega Kaizen Consulting

Omega Tool Corp

Omega Tool Corp.

OMERS

OMERS / Oxford Properties Group

OMFPOA Executive

Omilia

Omni Hotels & Resorts

OmniaBio

OmniaBio Inc

Omnicom Media

Omnifab

Omnify

Omnify - Home of LumiSheetTM

Omniscient Neurotechnology (o8t)

Omnissa

Omnissa, LLC

OMVE Lab & Pilot Equipment

On Location

On Side Restoration Services Ltd.

Oncoustics

OnDeck AI (YC S25)

One Core Media

One Dental, London ON

One Eighty Success

One Identity

One Mission Society

ONE-VALUE INC.

One10 LLC

one37

Onekawater

OneMedNet

OnePlan

OneSignal, Inc.

ONEtoONE Corporate Finance

OneVest

OneVest Technologies Inc.

ONEX

Ongles Jenny Spa (9444 9394 Québec inc.)

Onico Solutions

ONIT Construction Inc.

Online Internet Marketing Company

Only Data Entry

Onni Group

Onni Group of Companies

ONroute

Ontario Bar Association

Ontario Cannabis Store

Ontario Clean Water Agency

Ontario Dental Association (ODA)

Ontario Energy Board

Ontario English Catholic Teachers' Association

Ontario Finance | Ontario Finances

Ontario First Nations Technical Services Corporation

Ontario HIV Treatment Network

Ontario Hospital Association

Ontario Hyundai

Ontario Medical Association

Ontario Ministry of Transportation/ Ministère des Transports de l'Ontario

Ontario Municipal Administrators Association (OMMA)

Ontario Mutual Insurance Association

Ontario Ombudsman

Ontario Power Generation Inc.

Ontario Public Service Leadership | Leadership dans la fonction publique de l'Ontario

Ontario Reign

Ontario Rheumatology Association

Ontario Securities Commission

Ontario Society of Professional Engineers

Ontario Teachers Insurance Plan

Ontario Teachers' Pension Plan

Ontario Tech Student Union

Ontario Transit Group

Ontario Transit Group - Ontario Line - Southern Civil, Stations & Tunnel

OntarioMD

Onus Talent

Onward Technologies Limited

Onware Inc.

OnX

OnX Enterprise Solutions

ONxpress

Onyx Gold Corp.

Onyx RH & Recrutement inc.

Onyx-Fire Protection Services Inc.

Oolong Media

oolu

OP

Op2 North America

OPAL Corporate Connections

OPAL-RT TECHNOLOGIES India Pvt. Ltd.

Open Farm Inc.

Open Farm Pet

Open Ocean Robotics

Open Sky Group

Open Source Integrators

Open Systems Technologies

Opendoor

OpenFair Inc.

OPENLANE

OPENLANE, Inc.

OpenLoop

OpenLoop Health

OpenLoop Health, Inc.

OpenMined

OpenNova Team

OpenPhone

OpenReplay

OpenTable

OpenText

OpenX Software Limited

Operation Eyesight Universal

OpsLevel

OpsLogic Private Limited

Optalent

OpTalent | Recruitment

Optel

Opti9 Technologies LLC

Optical Center

Optichem

Optima Aero inc

Optima Living

Optimaliving

Optimize Financial Group

Optimum Life Reinsurance (Canada)

Optimus SBR

Optimy.ai

Optiom Inc.

Option Impôt

Option Subaru

Options Consulting Solutions

Optisigma Inc.

Optiv

Optiv Security

Optix

Optometrists

Optro

Optum

Opulence Education Group

Opus Art Supplies

Opus Fund Services

OpusClip

Opzilla Solutions Inc.

Orah

Orangetreeglobal

Orangutech

Orano Canada

OraSure Technologies Inc.

ORBCOMM

ORBCOMM Inc.

Orbis Investments

Orbital

Orca Communications

Orchestry

OrderGrid

OrderGrid Inc.

Ordre des Infirmières et Infirmiers du Québec - OIIQ

Ordre des pharmaciens du Québec

Ore Group

Orennia

Orezone - Mine Casa Bérardi

organicgirl

Organigram Global

Organika Health Products

Organimi

Organization: Government of Prince Edward Island

Organization: Saskatchewan Teachers' Federation

Organization: Western Financial Group

Organon Canada

Orica

Orica Limited

Origence

Origin Accounting & Advisory LLP

Origin Legal

Orion Digital

Orion Global Solutions

Orion Group

Orion Health group

Orion Innovation

Orizon Mobile

Orla Mining Ltd

Ornge

ORNGE Inc.

Oro Labs

ORPC Canada

ORS Canada Inc.

ORX

Osborne Financial Search

Osborne Recruitment

Osborne Recruitment - North America

Oscar Wylee

Oscar Wylee Pty

OSCO Construction Group

OSEDEA

Osela inc.

OSF Digital, Inc.

OSI

OSI Digital

Osi Digital Inc

OSI GROUP - GROUPE SOI

OSI Maritime Systems

OSI Maritime Systems Ltd.

OSL Direct

OSL Retail Services

OSL Retail Services Inc

Osler Tax Group

Osler, Hoskin & Harcourt LLP

Oslo Construction inc.

Osta-Aeco

Ostrada

Other.TM

Otsuka Canada Pharmaceutical Inc.

Otsuka Pharmaceutical Co., Ltd

OTT Financial Group

Ottawa Catholic School Board

Ottawa-Carleton District School Board

Otter Farm & Home Co-operative

Our Media Inc.

Ouster

Ouster, Inc.

Out in Science, Technology, Engineering, and Mathematics

Outbuild

Outhire Inc

Outhire Inc.

Outillage Industriel Québec

Outlier Search Group

Outpost Recruitment

Outright Consulting

Outset Law

Outwitly Inc.

OVA

OVC Assurance

Overstory

OVHcloud

Ovrc

Owen Sound

Owl.co

Owlet Baby Care

Own the Podium

Owner.com

Oxa

OXARO Inc.

Oxebo inc.

Oxford Learning Centres Inc.

Oxford Learning Centres, Inc.

Oxford Learning Stoney Creek

Oxford Properties Group

OXIO

Oxy petroleum company Canada

OxyChem

Oyster

OZZ Electric Inc.

Ozzeal Pty Ltd

OÏKOS Construction