Drosera cuneifolia is a rosetted sundew endemic to South Africa. The species is names for its cuneate leaves.

Drosera cuneifolia has medium-sized rosettes commonly reaching about 4cm in diameter. The leaves are broad throught their length and wider towards their ends. The leaves are truncated at the edge, giving them a wedge (cuneate) shape. The flower stems are long and the flowers are pink.

The species is endemic to winter moist habitats in the Table Mountain range near Cape Town, South Africa. It is usually winter growing and enters a loose dormancy during the dry summer months.

Drosera cuneifolia is distinguished from other rosetted sundews in the area by its dilated leaves that are wedge-shaped, appearing as if they are cut off at the ends.