Beginning immediately, customers in the brand's DD Perks loyalty program can receive a 99-cent hot or iced medium coffee in the Baltimore area on all Orioles home dates.
The offer extends through Aug. 31.
Dunkin' Donuts said it has also created two team-inspired doughnuts, each with orange icing — the Orioles Magic Donut and the Birdland Donut.
The Community Cruiser, a mobile sampling vehicle, will be at a half-dozen home games beginning Saturday against the Boston Red Sox.
Massachusetts-based Dunkin' Donuts has more than 12,200 restaurants in 45 countries.
The company has long had a partnership with the Ravens as well. Last season, it was the "Official Coffee and Breakfast" of the football team.