Trichosporonoides australiense sp. nov.: a basidiomycetous yeast-like fungus is described and illustrated with information on some physiological characteristics based on a single strain isolated from sweetened orange/mango in Australia. The differences between it and already described members of the genus are discussed. The new species may be distinguished principally by its inability to ferment sucrose and maltose. A dichotomous key to all described members of the genus is provided.