Nova Scotia (pronounced /ˌnoʊvəˈskoʊʃə/; Latin for New Scotland; Scottish Gaelic: Alba Nuadh; French: Nouvelle-Écosse) is a Canadian province located on Canada's southeastern coast. It is the most-populous province in Atlantic Canada. Its capital, Halifax, is a major economic centre of the region. Nova Scotia is the second-smallest province in Canada with an area of 55,284 square kilometres (21,300 sq mi). Its population of 939,531 makes it the fourth-least-populous province of the country, though second-most-densely populated.

Nova Scotia's economy is traditionally largely resource-based, but has diversified since the middle of the 20th century. Industries such as fishing, mining, forestry and agriculture remain very important and have been joined by tourism, technology, film, music, and finance.

The province includes several regions of the Mi'kmaq nation of Mi'gma'gi, which covered all of the Maritimes, as well as parts of Maine, Newfoundland and the Gaspé Peninsula. Nova Scotia was already home to the Mi'kmaq people when the first European colonists arrived. In 1604, French colonists established the first permanent European settlement north of Florida at Port Royal, founding what would become known as Acadia. The British Empire obtained control of the region between 1713 and 1760, and established a new capital at Halifax in 1749. In 1867 Nova Scotia was one of the founding provinces of the Canadian Confederation, along with New Brunswick, and the Province of Canada (which became the separate provinces of Quebec and Ontario).