That's how, well, everyone outside US calls them?
We tend to use aboriginal in Canada, or to actually refer to a people by name, e.g., Dene, Cree, Métis, Inuit; we used to use Indian, but it's inaccurate and often considered offensive.
Note: Aboriginal includes First Nations (what used to be called Indian, or native), Métis, and Inuit, so is the best, most comprehensive term.
So while we use/understand the term (American) Indians, Indian by itself would be considered to refer to people from India.
This is how I have it figured (for Canada / GTA area specifically):
Indian = Native American
Asian = East Asian
Brown = South Asian / West Indian
Black = African, West Indian / AA (African American)
Hindu = Indian (i.e. a person from India)