Acacia flocktoniae is a shrub species that is endemic to Australia. Plants grow to between 1.5 and 3 metres high and have narrow phyllodes that are between 4 and 10 cm long. The cream to yellow flowerheads appear in racemes of 4 to 10 in the axils of the phyllodes. These appear predominantly between June and September in the species native range and are followed by straight or slightly curved seed pods which are 4 to 11 cm long and 5 to 7 mm wide.