CAE, Inc - provides simulation and related technologies as well as training services to the civil aviation industry and defence forces worldwide. CAE offers civil aviation, military and helicopter training services in 40 locations worldwide where it trains more than 80,000 civil and military crewmembers annually.

Bombardier - World's leading supplier of rail and other train cars, Largest producer of business aircraft, 3rd when all aircraft considered - behind only Boeing and Airbus.

BlackBerry - the smartphone market share leader in Indonesia, South Africa, Argentina, Middle East.  Leads all companies in the corporate market - Majority of Fortune 500 companies use the BlackBerry.

TD Bank -Manages car insurance for Chrysler North America

Couche-Tard - World's largest convenience store operator has stores in USA, Europe, Mexico, Japan, China, Vietnam, Indonesia.  June 20, 2012 pays $2.8 billion to takeover the largest oil and gas retailer in Scandanavia Statoil Fuel & Retail.  623 corporate stores in Arizona alone !

Barrick Gold - World's largest gold company and producer owns some of the largest gold mines in South America (Veladero, Lagunas Norte, Pueblo Viejo 1 million ounces per year), Australia (Super Pit), Africa and the United States (Goldstrike, Cortez).

Goldcorp - Owns 100% of Penasquito a Mexican mine with over 1 billion ounces of 2P silver reserves.

Ontario Teachers Pension Plan Board - Largest shareholder in a number of major foreign companies including 27% stake in Northumbrian Water Group, the main servicer of water utilities in England.

Insurance - Manulife Financial, Sun Life and Great-West Lifeco are three of the 30 biggest insurance companies in the world.

Scotiabank - One of the largest foreign-based banking institutions present in South America.

Pacific Rubiales Energy - Fastest growing private company in Colombia.  One of the largest investors in South America among foreign oil producers.

Valeant Pharmaceuticals - Montreal-based pharma company with market cap of about $50 billion.  Owns such brands as Bausch & Lomb.  May 2014: $47 billion takeover bid for Allergan Inc; if accepted Valeant would become one of the world's five largest pharmaceutical companies.

Vermillion Energy - France's leading oil producer.

Loblaw Companies - Private clothing line Joe Fresh Style sold at 600 J.C. Penney locations across the United States.

Irving Oil - Network of gas stations extends into New England.

Corel - Among the market leaders in vector imaging software.

Enbridge - Owns oil and gas pipeline infrastructure in the United States.

Thomson Reuters - A leader in global media reporting.  Largest shareholder is Canada's wealthiest person Kenneth Thompson Jr.

Petrobank, Suncor, Cenovus - Own key patents used around the world in the extraction of oil and gas.

Potash Corp of Saskatchewan - Leading supplier of fertilizer.

Indigo Chapters - The bookstore chain plans to open up new stores stateside beginning in 2014.  Already secured deal with Apple for e-books - will open 40 Apple in-store locations.

Lululemon - Exercise clothing retailer.

Canadian National Railway -  world's second largest train company by market value ($35/$45b) serves USA, Canada.

9% of Canadians worldwide live outside the country. That is much higher than it is for the USA (1.7%),China (2.6), Australia (4.3%)

Canada is home to a diverse array of companies whose influence extends beyond Canada's borders. 

The industries they play a vital role in include technology, aerospace, train transport, banking, insurance, food retailing, computer programming, insurance, oil, gold mining, transportation, fertilizer, gas, among many others.

also notable:  Inventor of the image tracing software Portrace used by Inkscape teaches math at Dalhousie University.