National Coffee Day 2026 features major discounts and free beverages from leading coffee chains including Dunkin', Starbucks, Krispy Kreme, and others. Dunkin' offers free medium coffee for rewards members with purchase, Starbucks introduces the Aerocano drink, and chains like Tim Hortons provide free coffee with no purchase required. The promotions highlight America's coffee consumption, with two-thirds of US adults drinking coffee daily.