Krispy Kreme is offering a FREE doughnut of your choice at participating U.S. Krispy Kreme shops on Halloween! Just show up wearing your Halloween costume on October 31, 2020 to get yours. No coupon required. They'll also have their last Sweet-or-Treat Saturday on 10/31; get a $1 Sweet-or-Treat Dozen to share with friends or neighbors when you buy any dozen! Click here to find a location near you.