Three Brothers Diner is located at 1030 Dixwell Ave, New Haven, CT. This business specializes in Restaurants Diners. Three Brothers Diner is open Mon, 12am-12am ; Tue, 12am-12am ; Wed, 12am-12am ; Thu, 12am-12am ; Fri, 12am-12am ; Sat, 12am-12am ; Sun, 12am-12am. and accepts American Express, Cash, Mastercard and Visa.