Coffea stenophylla, also known as highland coffee or Sierra Leone coffee, is a species of Coffea originating in West Africa.

As of 2020, it is not commercially cultivated, because its low yield and small berries make it inferior to the two economically dominant species Coffea arabica and Coffea canephora (robusta).

Research is being done to evaluate the sensory and agronomic benefits of commercially cultivating it as a method of expanding the genetic diversification of global coffee stock and increasing resilience to both climate change and crop disease pressures.

C. stenophylla is native to the West African countries of Guinea, Ivory Coast, Liberia and Sierra Leone. The plant grows as a shrub or tree, to a height of up to 20 feet and has been found to be a heat-tolerant species of coffee.

Ripe C. stenophylla berries are a dark purple, in contrast to C. arabica, whose berries turn red when ripe.

It has a flavor profile comparable to C. arabica and has been described as complex and naturally sweet with medium-high acidity, fruitiness, and a good mouth feel.

The specific epithet is derived from the Greek: stenos (narrow) and phyllon (leaf) to give "narrow-leaved".

C. stenophylla was discovered by Swedish botanist Adam Afzelius in the 18th century, and first published by Scottish botanist George Don.