Palmiet River (Afrikaans: Palmietrivier) is a river located in the Western Cape province of South Africa.

The Palmiet River is a typical Western Cape river, experiencing winter rainfall and it is important for the Western Cape Water Supply System.

It has a small catchment area of 500 km2, flows through the expanse of the Elgin Valley, and reaches the ocean through an estuary.

[1] This river has six irrigation and hydro-power dams along its length, and provides water for agricultural and industrial uses, as well as to the city of Cape Town.

[2] It is unclear why there has been an apparent increase in flow over the last 30 years.