Arneis is an Italian white grape originating from Piedmonte, Italy. Most commonly found in the hills of Roero, northwest of Alba. It can also be used to produce DOC wines from Langhe. Traditionally Arneis has been used to soften the big tannic Piedmonte wines made from Nebbiolo.

Today it is more commonly being used to produce single varietal wines. Arneis can be difficult to grow, with naturally low acidity, but better wines are produced when grown on chalky/sandy soils of Roero. Whereas more elegant perfumed wines come from sandy clay soils. The best wines produce floral, dry, full bodied wines, showing aromas of almonds, apricots, peaches and pears.

Although not widely planted outside of Italy, Australia, New Zealand and California are producing excellent examples. In Australia, excellent examples of Arneis are being produced in the King Valley, Mornington Peninsula and South Australia.