The name of the tectonic plate that includes most of North America is the North American Plate. This tectonic plate extends from the Arctic Ocean in the north to the northern part of South America in the south. It encompasses the majority of the United States, Canada, and parts of the Atlantic Ocean seabed. The North American Plate is significant in geological studies, as it interacts with several other plates, such as the Pacific Plate, creating various geological features including mountains and earthquakes. Its movements have shaped the continent’s landscape over millions of years.