A new distinct cultivar of Dahlia plant named ‘DAATTEN’, characterized by its compact growth with cylindrical upright to slightly spreading shape stiff and strong lateral stems and thick single and compound leaves with up to 3 leaflets color of mature leaves RHS 147A (upper side), RHS 191B (Underside) compound leaves 12-18 cm in length, and 12-15 cm in width and single leaves 6-13 cm in length and 6-9 cm in width composite flower heads 11-12 cm in diameter with a large number of ray florets (about 120 to 140) and white ray florets (RHS 155B/155C) with small area of yellow near base (RHS 1B).
