One of the best food holidays of all-time is finally here, and lots of businesses are making sure to celebrate National Donut Day by offering a free pastry to anyone who walks in their doors.

The holiday, which dates back to 1938 and honored women who served donuts and collected supplies for World War I soldiers, and currently serves as a way to raise awareness for the Salvation Army's social services programs, is seeing several bakeries, cafes and coffee shops, among others, giving plenty of deals and offers of free donuts to celebrate.

Here's a list of places where you can go to enjoy some delicious and sugary treats for absolutely free:

Entenmann's: Enter their dessert sweepstakes on Facebook for a chance to win free donuts for an entire year

Fractured Prune Doughnuts: Get a free OC Sand doughnut all day

Heavenly Donut Co.: The Alabama based donut shop is not only offering free glazed donuts in store, but has partnered with the Salvation Army to serve free donuts and coffee to servicemen and women of the Air National Guard , and is asking customers who come into stores to donate canned goods and other non-perishable food items.

Jiffy Lube: While not quite the donut you may have had in mind, according to Thrillist, supporting locations in Philadelphia, Houston and Florence, S.C., are offering free tire air pressure checks to help customers avoid having to use their spare--or 'donut' tire. They will also serve complimentary donuts (edible ones) as well.

Krispy Kreme: Receive a free donut just for walking in the door at any participating locations throughout the U.S. (except Connecticut), Canada, and even Australia, Korea, Japan, Indonesia, Malaysia, Mexico, Puerto Rico, Philippines, and Turkey.

LaMar's Donuts: 'Any donut with a hole' is absolutely free with no purchase necessary

Shipley Do-Nut's: Until 12 p.m., receive one free glazed donut at any participating locations

The Tuscan Gun Officine & Alimentari: This one is only good for Brooklyn-ites as this café only has one location, but Gabriele Corcos and actress Debi Mazar will be serving Lavazza coffee and homemade chocolate-coffee donuts at their new café for free until 12:30.

Winn-Dixie Supermarkets: Customers at the store who show up to the in-store bakery can get one powdered donut hole for free while supplies last.

While not entirely free, these are more great deals celebrating National Donut Day as well:

Dunkin' Donuts: Receive a free donut with the purchase of any beverage all day June 5 at locations nationwide.

Donut Snob: The Donut shop is offering their Mini Snob's for $1.75 plus 50 percent off for delivery.

Honey Dew Donuts: Get a free Mocha Madness donut with the purchase of any medium drink

Tim Horton's: With a coupon, receive a free donut with any purchase