O. montana may refer to:

• Odontopodisma montana, insect in family Acrididae
• Oxalis montana, Mountain woodsorrel

• Borkhausenia albocinctella
• Borkhausenia amasiella
• Borkhausenia blidella
• Borkhausenia capnodyta
• Borkhausenia cenchrias
• Borkhausenia chalcocrates
• Borkhausenia cinerella
• Borkhausenia clevelandi
• Borkhausenia diveni
• Borkhausenia erythrocephala
• Borkhausenia exstimulata
• Borkhausenia gypsozyga
• Borkhausenia kokujevi
• Borkhausenia leucoritis
• Borkhausenia longa
• Borkhausenia luridicomella
• Borkhausenia marinensis
• Borkhausenia morella
• Borkhausenia muellerrutzi
• Borkhausenia obscurella
• Borkhausenia scotinella
• Borkhausenia sphacelina
• Borkhausenia stroemella
• Borkhausenia subgilvida
• Borkhausenia suzukiella