P. montana may refer to:
Passiflora montana, plant in the family Passifloraceae Platyptilia montana, moth of the family Pterophoridae Pradosia montana, plant in the family Sapotaceae Prestoea montana, the Sierran palm Prumnopitys montana, conifer of the family Podocarpaceae Psydrax montana, plant of the family Rubiaceae Pueraria montana, plant of the bean family