New South Wales stands as Australia's most populous state and one of its most historically significant wine regions, stretching along the country's eastern coast. Wine production here dates back to the early colonial period, with the first vines planted in the late 18th century. The state encompasses several distinct wine zones, from the coastal regions near Sydney to the inland areas west of the Great Dividing Range.

The Hunter Valley, located north of Sydney, represents the state's most celebrated wine region and benefits from a subtropical climate moderated by coastal influences. The region experiences warm, humid summers with afternoon cloud cover that helps preserve acidity in the grapes. Other notable areas include the cool-climate regions of Orange and Mudgee in the central tablelands, and the Riverina in the western plains, known for its irrigated vineyards and bulk wine production.

New South Wales has developed a particular reputation for Semillon, especially the distinctive style produced in the Hunter Valley, where the grape creates wines capable of extended aging without oak treatment. The state also produces notable Shiraz, Chardonnay, and Cabernet Sauvignon across its various regions. The diversity of climates and elevations allows for both warm-climate and cool-climate wine styles, making New South Wales one of Australia's most versatile wine-producing states.