Komna is a mountain karst plateau in the Julian Alps in northwestern Slovenia. It has an elevation from 1,300 metres (4,300 ft) to 1,750 metres (5,740 ft). It has a triangular shape and rises above the Bohinj Basin. To the east, it continues into the Triglav Lakes Valley. The lowest measured temperature in Slovenia was recorded at Komna on 9 January 2009: −49 °C (−56 °F).
The name Komna is derived through ellipsis from *Komьna (planota); the adjective *komьna comes from the Slavic common noun *komъ 'hill, mountain, elevation', and the second element means 'plateau'. The name therefore etymologically means 'mountain (plateau)'.
The Komna Lodge stands on Komna at an elevation of 1,520 metres (4,990 ft). It is operated by the Ljubljana Matica Alpine Club.