Eucalyptus yarriambiack is a species of small, spreading tree that is only known from a single population in Victoria, Australia.

It has rough, fibrous to flaky bark on the trunk, smooth bark above, narrow lance-shaped to elliptical adult leaves, flower buds in groups of seven to eleven, white flowers and hemispherical to cup-shaped fruit.

The flower buds are arranged in leaf axils in groups of seven to eleven on a peduncle 6–11 mm (0.24–0.43 in) long, the individual buds on pedicels 2–4 mm (0.079–0.157 in) long.

[2][3] Eucalyptus yarriambiack was first formally described in 2012 by Kevin James Rule in the journal Muelleria from specimens he collected in 2005 near Brim.

[3] This eucalypt is only known from a single site between Brim and Beulah in a usually dry watercourse.