5 Biggest Canadian Oil and Natural Gas Companies

3. Suncor Energy Inc. (NYSE:SU)

Market Cap as of March 5: $45.11 billion

Suncor Energy Inc. (NYSE:SU) is one of the biggest oil and natural gas companies in Canada. The company has an experience of over 60 years in oil sands, exploration and production, energy marketing, refining, and renewable energy. Suncor Energy Inc. (NYSE:SU) is valued at $45.11 billion, as of March 5.

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