Saxifraga nathorstii, or Nathorst's saxifrage, is a species of flowering plant belonging to the family Saxifragaceae.

[1] Saxifraga nathorstii is a putative allotetraploid hydrid between S. aizoides and S. oppositifolia,[2][3] and morphologically intermediate, even in terms of pollen,[4] between the parent species.

Stems with alternate to opposite 4 – 9 mm long lance-shaped leaves with a pointed oval apex.

[5] Commonly found on moist sandy to gravelly soils, e.g. in riverbeds sand and gravel or desiccated ponds.

[6][7] Despite is its limited distribution range and endemic status it is not a threatened species.