Dunkin’ is giving away free coffee today with multiple promo codes available to customers, including DUNKINGS, which scores a free iced coffee in any size when entered in the Dunkin’ app.
The coffee chain is running a major promotional giveaway on August 25, making 1 million free beverages available to Dunkin’ Rewards members. According to promo code tracking sites, DUNKINGS remains one of the active codes for a complimentary iced coffee of any size, valid through the Dunkin’ mobile app at checkout.
Dunkin’ has become known for its frequent free drink promotions throughout 2026. The chain gave away 1.995 million free iced coffees on February 9 using the code GOODWILLDUNKIN, repeated the offer on April 1 with code STILLNOTAJOKE, and launched another million-drink giveaway on May 19 with code COFFEEISFREE, according to sources tracking the promotions.
To redeem the free coffee, customers must have the Dunkin’ app downloaded and be a Dunkin’ Rewards member. They enter the promo code in the “Add Promo Code” field under the Offers tab at checkout. The free coffee certificate is typically valid for a set period after the code is redeemed, allowing customers flexibility in when they claim their drink.
Dunkin’ has scheduled additional free drink giveaways for later in the year, with another million-drink promotion expected on September 22. These recurring promotions reflect the chain’s strategy of driving app engagement and customer loyalty through limited-time offers that create urgency and reward its most engaged members.
Sources
- Dunkin Donut Menu — verified promo codes for August 2026, including DUNKINGS for free iced coffee any size
- Groupon — current Dunkin’ promo codes and active offers
- Doctor of Credit — Dunkin’ free drink schedule for August 25 through September 29, 2026
- Dunkin’ Newsroom — official company statements on free coffee promotions
- Good Housekeeping — February 2026 free coffee promotion with GOODWILLDUNKIN code
- People Magazine — May 19, 2026 million-coffee giveaway details
