A new distinct cultivar of Dahlia plant named ‘DATREOGTYVE’, characterized by its upright to slightly spreading shape, with stiff and strong lateral stems and thick compound leaves, with up to 15 leaflets. The color of the mature leaves are RHS Yellow-green 147A (upper side) and RHS Grayed-green 191A (Underside). Compound leaves are 10-28 cm in length, and 10-25 cm in width. Only a few single leaves are present near the peduncle. Composite flower heads are 9-11 cm in diameter, with a large number of ray florets (about 150 to 180). The ray florets are RHS White 155C on inner third near base, and RHS Violet 84B on the outer two thirds.
