Acacia lineolata, commonly known as dwarf myall, is a species of shrub in the family Fabaceae.

The open-branched shrub typically grows to a height of 0.5 to 2 metres (2 to 7 ft)[1] and has a dense, rounded or obconic shrub habit with glabrous or hairy branchlets.

The leathery, glabrous, evergreen, patent to ascending phyllodes have a linear to oblong-elliptic shape and are 2 to 6.5 cm (0.79 to 2.56 in) in length and 2 to 5 mm (0.079 to 0.197 in) wide and have numerous closely parallel, yellow nerves.

There are two recognised subspecies: It is native to an area in the Wheatbelt, Great Southern and Goldfields-Esperance regions of Western Australia where it is commonly situated on sandplains, saline flats and low lying areas growing in rocky clay, saline loam or sandy soils.

[1] The range of the shrub extends from around Yuna in the north west to around Pingrup in the south east.