Homoranthus wilhelmii, commonly known as the eastern feather flower, is a species of flowering plant in the family Myrtaceae and is endemic to South Australia. It is a small, spreading shrub with cylindrical to flattened leaves and white or pink flowers arranged in corymbs on the ends of branchlets. The distribution includes an area on the Yorke Peninsula, but it is most common on the southern Eyre Peninsula.
Homoranthus wilhelmii is a spreading shrub that grows to high and wide. The leaves are grey-green, scented, linear in shape and round to triangular in cross-section, long, about wide and terminate in a short, sharp point. The flowers are pink or white, slightly fragrant and arranged in a dense corymb at the ends of branches on a pedicel long. The floral cup is cylindrical in shape, about long with five ribs on its sides and between three and six hairs on each of the five sepal lobes. The petals are about long and the five stamens