The Annapolis River is a Canadian river located in Nova Scotia's Annapolis Valley.Measuring over 80 km in length, the river flows southwest through the western part of the valley from its source in Caribou Bog near the village of Aylesford in western Kings County, to its mouth at Port Royal where it empties into the Annapolis Basin. The river's watershed drains an area of approximately 2000 km² and has an annual discharge rate of 1,000,000,000 m³. The eastern part of the Annapolis Valley is drained by the Cornwallis River, also rising in the Caribou Bog, which has been dated to 10,000 years old.
The river flows through some of the most productive agricultural land in the province. The comparatively mild micro-climate produced by the valley's North and South mountain ranges, as well as its proximity to the waters of the Bay of Fundy make the region ideal for fruit crops such as apples.