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