All of the Canadian youtubers that I watch pronounce the letter z as “zi”, as is done in the United States. However, I have read online that it is more common for Canadians to pronounce it as “zed”, as is done in the United Kingdom. Is this a regional thing? How do you pronounce the letter z?


What?
Username checks out, maybe…
https://en.wikipedia.org/wiki/Knights_Who_Say_"Ni!"