Eucalyptus subcrenulata, commonly known as Tasmanian alpine yellow gum,[2] is a species of small to medium-sized tree that is endemic to the highlands of Tasmania.

Young plants and coppice regrowth have stems that are square in cross-section, sometimes with a wing on each corner and sessile leaves, arranged in opposite pairs.

Eucalypts in section Maidenaria have cotyledons with two lobes, flower buds in leaf axils and with two opercula, stamens with versatile anthers and flattened seeds with a ventral hilum.

[2] Eucalyptus johnstonii tends to occur at lower altitudes than E. subcrenulata and E. vernicosa, usually a small-leaved shrub, at the highest.

[11] Evans (1986) even identified E. subcrenulata as being a promising species for planting in milder areas of the United Kingdom.