Chambourcin (French pronunciation: [ʃɑ̃buʁsɛ̃]) is a variety of grapevine belonging to the Vitis genus in the flowering plant family Vitaceae.

Its parentage is uncertain, but genetic studies show it likely includes several North American Vitis species in its background including: V. berlandieri Planch., V. labrusca L., V. lincecumii Buckley, V. riparia Michx., V. rupestris Scheele, and V.

Chambourcin is considered a very productive grape with crop yields reported ranging from 11.1 tons per hectare to 17.3 tons per hectare in a study performed by Ohio State University.

[3] Chambourcin has been planted widely in the mid-Atlantic region of North America, particularly in such states as New Jersey, New York, and Pennsylvania.

It is also grown in Harrow and Ruthven, Ontario, and in Kelowna, B.C., Canada; several counties in Virginia; Frederick, Washington, Harford, Prince George's County, Maryland, Calvert County, Maryland, and St. Mary's County, Maryland; Kent County, Delaware; Monroe County, Indiana; Daviess County, Kentucky; in the Ohio River Valley AVA Ohio; in the Lake Erie AVA of Ohio, New York, and Pennsylvania; Greenbrier, Calhoun, Roane, and Mineral counties in West Virginia; Allegan County, Michigan; the Shawnee Hills AVA of southern Illinois; the Yadkin Valley and Haw River Valley of North Carolina; Western Tennessee in the Mississippi Delta AVA[4][circular reference]; [[Missouri[Augusta AVA] Missouri]]; south-central Kansas; Norman Oklahoma; New Zealand's Northland Region;[5] the Hunter Valley Region of New South Wales and other warm, humid regions in Australia; also in France and Portugal.