Olearia stuartii is a shrub or subshrub species in the Asteraceae family. It has an erect, branching habit and grows to between 40 and 90 cm high. The stems are woody and leaves are 10 to 25 mm long and 2 to 8 mm wide. The daisy-like flowerheads appear between June and September in the species native range. These have blue to mauve ray florets and yellow disc florets. The species occurs in woodland and on rocky hills in Western Australia, South Australia and the Northern Territory.