National Donut Day is the first Friday in June, which falls on June 6 this year. Many doughnut spots are offering a free treat today.

National Donut Day also celebrates the Salvation Army "Lassies," or women who served doughnuts to soldiers during WWI. National Donut Day is on Friday, June 6, and several chains are offering deals for the annual unofficial food holiday.

This Friday, June 6, is National Donut Day, and there are lots of bakery chains giving away free or discounted donuts. Here’s where you can score the best freebies and deals at chain restaurants and stores.