Dendrobium validicolle is a species of orchid. Its common name is the strong-stemmed diplocaulobium. It is found in New Guinea in lowland forests as a small to medium-sized, intermediate to hot growing epiphyte. The plants are crowded with oblong pseudobulbs carrying a single erect leaf. Blooms appear on a single inflorescence arising through a 5-10 mm long sheath. The flowers are 6 to 7 cm in diameter.