The capital of Newfoundland and Labrador is St. John 's . Newfoundland and Labrador 's capital and largest city , St. John 's , is Canada 's twentieth-largest Census Metropolitan Area , and is home to nearly 40 percent of the province 's population . St. John 's is the seat of government , home to the House of Assembly of Newfoundland and Labrador and the highest court in the jurisdiction , the Newfoundland and Labrador Court of Appeal .