What doughnut chains are popular?

Dunkin' Donuts, Tim Hortons, Krispy Kreme and Daylight Donuts are popular doughnut chains. Dunkin' Donuts is the largest doughnut chain, with over 7,200 locations in the United States. Globally, there are over 11,300 Dunkin' Donuts locations in 36 countries.

Tim Hortons is the largest food service operator in Canada, with over 3,400 locations across Canada, as of June 2013. Canada holds the distinction of having the most doughnut shops per capita than any other country. Krispy Kreme has over 1000 locations in 24 countries. Daylight Donuts has more than 900 locations in the United States and nearly a dozen international countries.