List of companies based in Ottawa

This is an alphabetical list of companies that have at one-point or another been based in Ottawa:
 * Abacus Data
 * Alterna Savings
 * Atkinson Film-Arts
 * Bank of Ottawa
 * Bell-Northern Research
 * BreconRidge
 * Bridgewater Systems
 * Brookstreet Pictures
 * Bruised Tongue
 * Campeau Corporation
 * Canada Deposit Insurance Corporation
 * Canada Mortgage and Housing Corporation
 * Canada Post
 * Canadian Bank Note Company
 * Canadian Broadcasting Corporation
 * Canadian Commercial Corporation
 * Ciel Satellite Group
 * Cognos
 * Corel
 * CPAC (TV channel)
 * CPCS Transcom Limited
 * Defence Construction Canada
 * Doyle Salewski Inc
 * DragonWave
 * Ekos Research Associates
 * ENCON Group Inc.
 * Epiphan Systems
 * Eurocom Corporation
 * Export Development Canada
 * Farm Boy
 * First Air
 * Freimans
 * Fuel Industries
 * Funbag Animation Studios
 * Gabriel Pizza
 * Gandalf Technologies
 * Giant Tiger
 * Granite Ottawa
 * Halogen Software
 * Hydro Ottawa
 * Ingenia Communications Corporation
 * International Development Research Centre
 * Iogen Corporation
 * Kelp Records
 * Klipfolio
 * Knight Enterprises
 * Kongsberg Gallium Ltd.
 * KRP Properties
 * Lacewood Productions
 * Lee Valley Tools
 * Level Platforms
 * Loeb (supermarket)
 * Lumenera
 * Magma Communications
 * Market Fresh
 * Marshes Golf Club
 * MediaMiser
 * Mercury Filmworks
 * MicroSystems International
 * Minto Group
 * Mitel
 * MKC Networks
 * NABU Network
 * Neptec Design Group
 * Newbridge Networks
 * Nordion
 * Le Nordir
 * Ogilvy's
 * Ottawa Car Company
 * Ottawa Central Railway
 * Ottawa Central Railway
 * Ottawa Dumpster
 * Ottawa Home Pros
 * Ottawa Renovation Pro Ltd.
 * PlaSmart
 * Pleora
 * Pronexus
 * ProntoForms
 * Protecode
 * Protus
 * Public Sector Pension Investment Board
 * Pure Spring Company
 * QNX Software Systems
 * Quickie Convenience Stores
 * Red Quill Books
 * SAW Video Mediatheque
 * Shopify
 * Siemens Healthineers
 * Signority
 * Skycron
 * Solace
 * Solidum Systems
 * Spiderwort
 * Spoonity
 * Tablo (DVR)
 * Telesat
 * Ten Broadcasting
 * Tundra Semiconductor
 * Versaterm
 * Wilderness Tours
 * Zarlink