If you love free food, this week is one of the sweetest weeks of the year. National Donut Day falls on Friday, June 5, 2026, and Dunkin' is once again celebrating with a free donut offer for customers nationwide. For the 16th consecutive year, Dunkin' is honoring the holiday by giving guests a free donut of their choice with the purchase of any beverage at participating locations. The offer is available while supplies last on June 5. How to Get Your Free Dunkin' Donut Getting