Arthur's Pass (el. 920 m.) is a mountain pass in the Southern Alps of the South Island of New Zealand. It marks part of the boundary between the West Coast and Canterbury regions, 140 km from Christchurch and 95 km from Greymouth. The pass lies in a saddle between the valleys of the Otira River, a tributary of the Taramakau, in the west and the Bealey River in the east.