The Port of Halifax comprises various port facilities in Halifax Harbour in Halifax, Nova Scotia, Canada. It covers 10 km2 (3.9 sq mi) of land, and looks after 150 km2 (58 sq mi) of water.

Halifax Harbour is a large natural harbour on the Atlantic coast of Nova Scotia, Canada, located in the Halifax Regional Municipality. Halifax largely owes its existence to the harbour, being one of the largest and deepest ice-free natural harbours in the world. Before Confederation it was one of the most important commercial ports on the Atlantic seaboard. In 1917, it was the site of the world's largest man-made accidental explosion, when the SS Mont-Blanc blew up in the Halifax Explosion of December 6.