The pecan nut (Carya illinoinensis) is a deciduous tree of the Walnut family (Juglandaceae) that can be up to 40 or 50 metres high.

The fruits are oblong-oval to cylindrical drupes. The shell is reddish-brown and marked with dark brown stripes. Like the walnut, the seed is deeply grooved. It has a sweet to nutty flavor.

The seeds are eaten raw. They are also frequently offered roasted and salted or used to garnish pastries, confectionery, and ice cream. The oil extracted from the fruits is edible but is primarily used in the cosmetics industry.

The pecan is native to the southern United States. It is planted in regions with a subtropical or warm temperate climate. Pecans can also grow in the Dutch climate, particularly the northernmost varieties from the United States.