Drosera esterhuyseniae is a rosetted sundew endemic to the Western Cape, South Africa. It has a small rosette around 4 cm in diameter. The leaves are semi erect, with a short petiole and a long, rounded lamina. The leaves are bright, matte green in colour, with contrasting red tentacles.

The species grows in well-drained xeric niches in the mountains of the Overberg District, South Africa. It is typically found in exposed fynbos in higher-elevation mountainous environments. It is winter-growing, flowering in late spring to early summer and enters dry-dormancy in mid-summer.

Drosera esterhuyseniae is most similar to D. xerophila, sharing a xeric niche and bright-green matte leaves. It differs in that its leaves are semi-raised (the leaves of D. xerophila are flat-lying). D. esterhuyseniae has been previously confused with D. aliciae var. curviscapa but differs in that its leaves are semi-raised and grows in xeric habitats (D. aliciae var. curviscapa is flat and grows in wet niches).