The most important holiday of the year is on Thursday, Sept. 29: National Coffee Day. Start it off on the right foot by grabbing a free (or nearly free) cup of coffee from the following participating coffee shops.

1. Coffee Bean and Tea Leaf: Get a free espresso shot when you download The Coffee Bean's new mobile app [1]. Select locations will also offer surprises, like free tumblers and the chance to win free coffee for a year. The Los Angeles location at Sunset and Hayworth is giving away free coffee for life to one customer.
2. Peet's Coffee: Get a free medium coffee from Peet's Coffee [2] when you purchase a select food item, including any artisan baked good, a Simply Oatmeal, or a Fresh Food item.
3. Dunkin' Donuts: Dunkin' Donuts [3] isn't quite giving away free coffee, but it is selling medium drip coffee for just 66 cents in honor of its 66th year in business.
4. La Mar's Donuts and Coffee: If you purchase a La Mar's Donuts and Coffee [4] traveler coffee mug for $1, you can get it filled for free through Sept. 29.
5. Birch Coffee: NYC coffee chain Birch Coffee [5] is offering free coffee 7 a.m. to 10 a.m.
6. Stewart's Shops: All locations of upstate New York coffee shop Stewart's Shops [6] will offer free hot and iced coffee from 12 p.m. to close on National Coffee Day.
7. Pilot Flying J: Print out this Pilot Flying J coupon [7] and get a free small coffee, tea, or cappuccino at this convenience store.
8. Krispy Kreme: Not only is Krispy Kreme [8] giving away free 12-ounce cups of coffee, it's also offering one free glazed doughnut per customer on Thursday.
9. Cumberland Farms: Text "FREECOFFEE" to 64827 to redeem a coupon for a free hot or iced coffee at Cumberland Farms [9].
10. Maui Wowi: Order online at Maui Wowi Coffees and Smoothies [10] with the code "ALOHACOFFEE" and receive 50 percent off your order.
11. Starbucks: OK, so Starbucks isn't giving out free coffee, but it's doing something even cooler! Starbucks will donate a free coffee tree [11] to a coffee farmer in need for every cup of brewed Mexican Chiapas coffee sold on National Coffee Day. It's a win-win for caffeine addicts everywhere.