People across the country will be able to mark the occasion by getting a sweet deal, as many stores will be providing free doughnuts.
Here are some of the locations:
Dunkin' Donuts will give a free doughnut with any drink purchase.
Krispy Kreme offers a free doughnut with no purchase necessary, in every state except Connecticut.
Duck Donuts will hand out a free sugar doughnut with no purchase necessary.
Cumberland Farms is giving free doughnuts between 5 a.m. and 10 a.m. with any purchase of coffee or a fountain drink.
What flavor donut will you celebrate with on #NationalDonutDay? 🍩— Cumberland Farms (@cumberlandfarms) June 2, 2016
Entenmann's will give away one free doughnut at select locations all across the country, and is also holding a sweepstakes in which one lucky winner will get a full year of free doughnuts.
Click the video above to see what happened when Eyewitness News Photojournalist Dave Alter stopped by a few New York doughnut shops to check out their clever creations.
National Doughnut Day was established in 1938 by the Salvation Army to honor its "Doughnut Lassies", who served doughnuts to soldiers during World War I.