D. montana

D. montana may refer to:


 * Deconica montana, mountain moss psilocybe, a mushroom
 * Deudorix montana, a butterfly in the family Lycaenidae
 * Downingia montana, the Sierra calicoflower, a flowering plant species native to California
 * Drepanosticta montana, a damselfly in the family Platystictidae
 * Drosophila montana, a fruit fly in the family Drosophilidae