Do Canada say gray or grey?

In Canada, the standard and preferred spelling is grey with an e, following British English tradition, though both gray and grey are understood because of American influence. Canadian Oxford Dictionary and government style guides list grey as the primary spelling for Canadian English. You would typically see grey in Canadian newspapers, educational materials, and official documents, as in grey area, grey sky, and greyhound. However, because Canada is geographically close to the United States and exposed to American products and media, the spelling gray with an a also appears frequently, especially in product names, brand names, and American imported content. Many Canadians use both spellings interchangeably in informal writing, but for formal Canadian writing, grey is considered more correct and consistent with other Canadian spellings like colour, centre, and behaviour that follow British forms. So while Canadians will understand both, grey is the expected Canadian spelling in formal contexts.