C. montana may refer to:
Carodista montana, a moth of the family Lecithoceridae Cedrela montana, the Cedro tree, of the family Meliaceae Centaurea montana, mountain cornflower Choreutis montana, a moth of the family Choreutidae Cicadetta montana, the New Forest cicada Cigaritis montana, a butterfly Clematis montana, the anemone clematis Coccothrinax montana, a palm Cochylimorpha montana, a moth of the family Tortricidae Coleophora montana, a moth of the family Coleophoridae Compsa montana, a beetle of the family Cerambycidae Craspedortha montana, a moth of the family Sphingidae Ctenisolabis montana, an earwig in the family Forficulidae Cydia montana, a moth of the family Tortricidae Cystopteris montana, mountain bladderfern