Symplocos colombonensis is a plant in the family Symplocaceae, native to Borneo. It is named for the Colombon River in Sabah.
Symplocos colombonensis grows as a shrub or tree up to 10m (30feet) tall. The brown twigs have a zig-zag shape. The leaves are ovate and measure up to long. The inflorescences feature racemes of three flowers.
Symplocos colombonensis is endemic to Borneo, where it is confined to Mount Kinabalu in Sabah. Its habitat is montane forests, at elevations of .